--`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. The American Society of Mechanical Engineers A N A M E R I C A N N A T I O N A L S T A N D A R D METRN SIREW THREADS: ASME B1.13M-2001 (Revision of ASME B1.13M-1995) --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. Date of Issuance: July 10,2002 This Standard will be revised when the Society approves the issuance of a new edition. There will be no addenda or written interpretations of the requirements of this Standard issued t o this edition. This code or standard was developed under procedures accredited as meeting the criteria for American National Standards. The Standards Committee that approved the code or standard was balanced to assure that individuals from competent and concerned interests have had an opportunity to participate. The proposed code or standard was made available for public review and comment that provides an opportunity for additional public input from industry, academia, regulatory agencies, and the public-at-large. ASME does not "approve," "rate," or "endorse" any item, construction, proprietary device, or activity. ASME does not take any position with respect to the validity of any patent rights asserted in connection with any items mentioned in this document, and does not undertake to insure anyone utilizing a standard against liability for infringement of any applicable letters patent, nor assume any such liability. Users of a code or standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, is entirely their own responsibility. Participation by federal agency representative(s) or person(s) affiliated with industry is not to be interpreted as government or industry endorsement of this code or standard. ASME accepts responsibility for o n l y those interpretations of this document issued i n accordance with the established ASME procedures and policies, which precludes the issuance of interpretations by individuals. No part of this document may be reproduced i n any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher. The American Society of Mechanical Engineers Three Park Avenue, New York, NY 10016-5990 Copyright O 2002 by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS All Rights Reserved Printed in U.S.A. Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- ASME is the registered trademark of The American Society of Mechanical Engineers. --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- CONTENTS Foreword ............................................................................ Committee Roster .................................................................... vi vili 1 General ....................................................................... 1.1 scope .................................................................... 1.2 Interchangeability ......................................................... 1.3 References ................................................................ 1.4 Acceptability .............................................................. 1.5 Reference Temperature .................................................... 1.6 General Symbols .......................................................... 1.7 Units ..................................................................... 1.8 Federal Government Use .................................................. 1 1 1 1 1 1 2 2 2 2 Terminology .................................................................. 2.1 Definitions ................................................................ 2 3 Screw Thread Profile ........................................................ 3.1 Basic M Thread Profile ................................................... 3.2 Design M Profiles ........................................................ 3.3 Crest and Root Forms ..................................................... 6 6 6 7 4 Series of Threads ............................................................ 4.1 Standard Coarse Pitch General Purpose and Mechanical Fastener Series. M Profile ................................................................. 4.2 Standard Fine Pitch M Profile Screw Threads .............................. 4.3 Preferred Sizes ............................................................ 4.4 IS0 Metric Thread Series ................................................. 8 Allowances and Tolerances ................................................. 5.1 IS0 System of Limits and Fits as Applied to Screw Threads ............... 5.2 Tolerance Grade .......................................................... 5.3 Tolerance Position ........................................................ 5.4 Allowanceflolerance Formulas and Tables .................................. 5.5 Selected Tolerance Classes ................................................ 5.6 Length of Thread Engagement ............................................. 5.7 Circular Runout ........................................................... 5.8 Lead and Flank Angle Tolerances .......................................... 5.9 Coated or Plated Threads .................................................. 8 12 12 13 13 13 13 Design Formulas and Tabulated Values for Allowances and Tolerances ................................................................. 6.1 General ................................................................... 6.2 Rounding Procedure for Tabulated .Values .................................. 13 13 13 5 6 iii Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. ... 2 8 8 8 8 8 9 9 Allowances (Fundamental Deviations) ...................................... Length of Thread Engagement ............................................. Crest Diameter Tolerances ................................................. Pitch Diameter Tolerances ................................................. 13 16 16 16 7 Designation of Screw Threads .............................................. 7.1 General ................................................................... 7.2 Designation of Standard Screw Threads .................................... 7.3 Designation for Thread Fit ................................................ 7.4 Designation for Rounded Root External Thread ............................. 7.5 Designation of Threads Having Modified Crests ............................ 7.6 Designation of Special Threads ............................................ 7.7 Designation of Multiple Start Threads ...................................... 7.8 Designation of Coated or Plated Threads ................................... 19 19 19 20 20 20 20 21 22 8 Dimensional Accommodation of Coating or Plating for 60 Deg Threads .................................................................... 8.1 Introduction ............................................................... 8.2 Material Limits for Coated Threads ........................................ 8.3 Dimensional Effects of Coating ............................................ 8.4 External Thread With Allowance Available for Coating ..................... 8.5 External Thread With No Allowance for Coating ........................... 8.6 Internal Threads .......................................................... 8.7 Electrodeposited Coatings .................................................. 8.8 Other Considerations ...................................................... 22 22 22 22 24 24 25 25 26 9 10 Limits of Size ................................................................ 9.1 Standard Thread Series .................................................... 9.2 Determination of Size Limits .............................................. 9.3 Formulas for Calculating Limiting Dimensions for M Profile Screw Threads ................................................................ 9.4 Examples of Calculations of Size Limits ................................... 26 26 26 Lead and Flank Angle Tolerances ........................................... 10.1 Lead and Flank Angle Acceptance ......................................... 35 35 Figures 1 Basic M Thread Profile (IS0 68-1 Basic Profile) ................................. 2 Internal Thread. Design M Profile With No Allowance (Fundamental Deviation) (Maximum Material Condition) ..................................... 3 External Thread. Design M Profile With No Allowance (Fundamental Deviation) (Flanks at Maximum Material Condition) ........................... 4 Metric Tolerance System for Screw Threads ..................................... 5 M Profile. Extemal Thread Root. Upper and Lower Limiting Profiles for r min .=0.125P and for Flat Root Form (Shown for Tolerance Position g ) ....... 6 Ratio of Pitch Diameter Change to Thickness of Coating on 60 deg Threads ...... 7 Effects of Electrodeposited Coating on 60 deg External Threads .................. 8 Internal Thread - Limiting M Profile. Tolerance Position H ..................... 9 External Thread - Limiting M Thread Profile. Tolerance Position g .............. Tables 1 General Symbols ............................................................... 2 Thread Data. M Profile ......................................................... iv Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. 26 26 4 5 5 6 7 23 24 35 36 2 3 --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- 6.3 6.4 6.5 6.6 Limit Values for M Profile Minimum Rounded Root Radius ...................... Standard Coarse Pitch M Profile General Purpose and Mechanical Fastener Series ....................................................................... Standard Fine Pitch M Profile Screw Threads .................................... I S 0 261 DiameteríPitch Combinations From Which the Standards Were Selected ..................................................................... Length of Thread Engagement (IS0 965-1) ...................................... Examples of Tolerance Classes Required for Normal Gage Length Contacts With Various Thread Engagement Lengths ..................................... Minor Diameter Tolerances of Internal Thread (T@) (IS0 965-1) ................. Major Diameter Tolerances of External Thread (Tú) (IS0 965-1) .................. Pitch Diameter Tolerance of External Thread (Tdz) (IS0 965-1) ................... Pitch Diameter Tolerance of Internal Thread (TD2) (IS0 965-1) ................... Allowance (Fundamental Deviation) for Internal and Extemal Threads (IS0 965-1) ....................................................................... External Thread - Limiting Dimensions M Profile ............................... Internal Thread - Limiting Dimensions M Profile ............................... Example of External Screw Thread, Standard Size ............................... Example of Internal Metric Screw Thread, Standard Size ......................... Example of External Metric Screw Thread, Non-Standard Size .................... Example of Internal Metric Screw Thread, Non-Standard Size ..................... Allowable Variations in Lead and Equivalent Change in Functional Diameter ...... Allowable Variations in 30 deg Basic Half-Angle of Screw Threads .............. 21 27 33 38 39 40 42 44 47 Nonmandatory Appendices A Standard Rules for Rounding .................................................... B Thread Strength Design Formulas ............................................... C Limiting Dimensions M Profile Screw Threads - Inch Translation ............... D Basic Dimensions for I S 0 Series Metric Screw Threads From IS0 724 ........... E Overtapped Nut Thread Class 6AX .............................................. 49 50 51 60 64 3 4 5 6 7 8 9 10 11 12 13 14 15 16A 16B 16C 16D 17 18 . V --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. 8 8 9 10 14 15 15 16 17 18 FOREWORD In 1966, ANSI Standards Committee B1 - Standardization and Unification of Screw Threads - started preparation of a document for IS0 Metric Screw Threads based on the current IS0 recommendations and draft documents. Since there were some uncertainties as to the acceptance of this thread by American industries, the information was published in August 1967 with the title, “Interpretative Document Metric Screw Threads B1.13.” This document was never approved as an ANSI standard. A revision of the information based on the then current I S 0 standards and recommendations was published in April 1972 with the title “B1 Report - I S 0 Metric Screw Threads.” Again, the document was never approved as an ANSI standard. The document number was therefore removed and the status changed to a report. Interest in metric screw threads has grown at a rapid pace over the past several years with the advent of greater import and export business. The American National Standards Institute, in April 1971, established a committee, ANSI Special Committee to Study Development of an Optimum Metric Fastener System (OMFS). Included in the scope was metric screw threads. Recommendations were submitted to a joint ISO/TCliTC2 working group established in September 1973 to study the OMFS proposals. An ISO/TCl/TC2 Ad Hoc Advisory Panel meeting in April 1975 in Munich reached a compromise between the OMFS recommendations and the existing IS0 screw thread system. This compromise was approved, in the main, by the ISORC1 in its eleventh plenary meeting in Stockholm, June 1976. The first issue of this Standard, designated ANSI Bi.l3M, was approved as an Amencan National Standard on February 12, 1979. It provided a system of metric screw threads for general fastening purposes in mechanisms and structures and was in basic agreement with I S 0 screw thread standards and resolutions current at that time. It featured detailed information for diameter-pitch combinations selected as preferred standard sizes. The 1983 issue of this Standard was designated ANWASME B1.13M-1983 and was approved as an American National Standard on August 5, 1983. It updated the 1979 issue to include (a) the addition of the new IS0 tolerance position f; (b) the addition of a section on dimensional accommodation of coating or plating and; (c) the addition of a section on lead and flank angle tolerances. The 1995 issue of this Standard was designated ASME B1-13M-1995 and was approved as an American National Standard on February 20, 1995. It updated the 1983 issue to include (a) the addition of an 8 mm pitch series; (b) the addition of standard size MlOxl; (c) the provision for adjustment of internal thread tolerance class for short and long lengths of thread engagement which may be used instead of external thread class adjustment and; (d) changes in rounding procedures which follow the principles of ASME B1.30M. This issue updates the 1995 issue and includes (u) incorporation of changes made in the 1998 issue of IS0 261 including addition of diameters 125, 130, and 140 in the 8 mm pitch series; and changing of the 7 mm diameter from 3rd to 2nd choice in Table 6; vi --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. (b) recognition of changes made in the 1998 issue of I S 0 965-1 including the stating of when International practice permits thread designation without thread class (not USA practice); and modifying the designation of multiple lead threads to be more in line with IS0 practice; (c) incorporation of the new 1998 International Standard, IS0 965-5, by adding Appendix E for Class AX threads; (d) minor changes in some thread root diameters due to modified calculation and rounding procedures added in ASME B1.30. ASME B1.30 uses rounding upward when the digit following the last rounded place is a 5 followed by zeros. Prior to issue of ASME B1.30, rounding was to the nearest even digit. Tabulated values appearing in IS0 Standards are not subject to rounding rules of ASME B1.30; (e) changes in Circular Runout tolerances and; v ) other required updates and corrections. Sugestions for improvement of this Standard are welcome. They should be sent to Secretary, ASME B1 Standards Committee, Three Park Avenue, New York, NY 10016-5990. This revision was approved as an American National Standard on May 22, 2001. vii --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. ASME STANDARDS COMMITTEE BI Standardization and Unification of Screw Threads (The following is the roster of the Committee at the time of approval of this Standard.) OFFICERS A. D. Shepherd, Jr., Chair J. R. Bird, Secretary COMMITTEE PERSONNEL --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- G. L. Allen, The L. S. Starrett Co. A. L. Barrows, Greenfield Industries M. H. Bernier, Pilgrim Screw Corp. J. R. Bird, The American Society of Mechanical Engineers F. G. Calderone, Quality Syctems Implementers J. Davis, US. Nuclear Regulatory Commission L. N. Dixon, Jr., General Electric R. Dodge, Pennoyer-Dodge Co. G. A. Flannery, Mercury Gage Co. D. Skierski, Alternate, Mercury Gage Co. H. N. Frost, Defense Supply Center Philadelphia D. S.George, Ford Motor Co. J. R. Gervasi, Kerr Lakeside Inc. J. Greenslade, Greenslade and Co. L. C. Johnson, The Johnson Gage Co. D. D. Katz, Precision Fittings R. P. Knittel, Leitech / AMTMA B. Larzelere, Deltronic Corp. L. L. Lord, Caterpillar, Inc. R. L. Tennis, Alternate, Caterpillar, Inc. M. H. McWilliams, PMC Gage, Inc. D. Miskinis, Kennametal-IPG W. R. Newman, Facil LLC, USA M. W. Rose, Southern Gage, Inc. D. M. Satava, Consultant E. Schwartz, Consultant R. H. Searr, Conam Quantum Inspection and Testing R. E. Seppey, Consultant A. D. Shepherd, Jr., Emuge Corp. A. G. Strang, Consultant R. D. Strong, General Motors Corp. A. F. Thibodeau, Swanson Tool Manufacturing, Inc. R. C. Veale, Consultant R. E. Vincent, Jr., General Plug Manufacturing Co. C. J. Wilson, Industrial Fasteners Institute D. R. Aken, Alternate, Industrial Fasteners Institute viii Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. SUBCOMMITTEE 13 THREADS - METRIC SCREW E. Schwartz, Chair D. R. Akers, Industrial Fasteners Institute A. L. Barrows, Greenfield Industries F. G. Calderone, Quality Systems Implementers R. Dodge, Pennoyer-Dodge Co. D. S. George, Ford Motor Co. J. Greenslade, Greenslade 81Co. L. L. Lord, Caterpillar, Inc. D. Miskinis, Kennametal-IPG W. R. Newman, Facil LLC, USA R. E. Seppey, Consultant A. G. Strang, Consultant R. D. Strong, General Motors Co. R. L. Tennis, Caterpillar, Inc. A. F. Thibodeau, Swanson Tool Manufacturing, Inc. R. E. Vincent, Jr., General Plug Manufacturing Co. C. J. Wilson, Industrial Fasterners Institute --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- ix Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. i 1 ASME B1.13M-2001 METRIC SCREW THREADS: M PROFILE 1.1 Scope This Standard contains general metric standards for a 60 deg symmetrical screw thread with a basic I S 0 68-1 profile designated M profile. The M profile threads of tolerance class 6W6g are intended for metric applications where inch class 2N2B have been used. At the minimum material limits, the 6W6g results in a looser fit than the 2N2B. Tabular data is also provided for a tighter tolerance fit external thread of class 4g6g which is approximately equivalent to the inch class 3A but with an allowance applied. Formulation and tolerancing data is included for applications requiring other fits. Publisher: The American Society of Mechanical Engineers (ASME), Three Park Avenue, New York, NY 10016-5990; Order Department: 22 Law Dnve, Box 2900, Fairfield, NJ 07007-2900 ASTM F568M, Standard Specification for Carbon and Alloy Steel Externally Threaded Metric Fasteners Publisher: The American Society for Testing and Materials (ASTM), 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959 IS0 3, Preferred numbers-Series of Preferred Numbers IS0 68-1, IS0 General Purpose Screw Threads-Basic Profile-Part 1: Metric Screw Threads IS0 261, IS0 General Purpose Metric Screw Threads General Plan IS0 724, I S 0 Metric Screw Threads-Basic Dimensions IS0 898-1, Mechanical Properties of Fasteners-Part 1: Bolts, Screws, and Studs I S 0 965-1, I S 0 General Purpose Metric Screw Threads-Tolerances-Part 1: Principles and Basic Data NOTE: A 4H5W4h6h is approximately equivalent to a class 3N3B fit in the inch system. 1.2 Interchangeability Threads produced to this Standard are fully interchangeable with threads conforming to other National Standards which are based on IS0 68-1 basic profile and IS0 965-1 tolerance practices. 1.2.1 Assembly. Threads produced in accordance with M profile and MJ profile (ASME B1.21M) design data will assemble with each other. However, external MJ threads will encounter interference on the root radii with internal M thread crests when both threads are at maximum material condition. Publisher: International Organization for Standardization (ISO), 1 rue de Varembé, Case Postale 56, CH 1211, Genève 20, Switzerland I Suisse SAE J1199, Mechanical and Material Requirements for Metric Externally Threaded Steel Fasteners 1.3 References Publisher: Society of Automotive Engineers (SAE), 400 Commonwealth Drive, Warrendale, PA 15096-0001 The latest issues of the following documents form a part of this Standard to the extent specified herein. 1.4 Acceptability Acceptability of product threads shall be in accordance with ASME B1.3. Gages and gaging are in accordance with ASME B 1.16M. ASME B 1.3, Screw Thread Gaging Systems for Dimensional Acceptability - Inch and Metric Screw Threads (UN, UNR, UNJ, M and MJ) ASME B 1.7M, Nomenclature, Definitions, and Letter Symbols for Screw Threads ASME B 1.16M, Gages and Gaging for Metric M Screw Threads ASME B1.21M, Metric Screw Threads: MJ Profile 1.5 Reference Temperature The reference temperature is 20°C for dimensions defined by this system. 1 Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- ASME B1.30, Screw Threads - Standard Practice for Calculating and Rounding Dimensions ASME B47.1, Gage Blanks ASME Y 14.5, Dimensioning and Tolerancing 1 GENERAL METRIC SCREW THREADS: M PROFILE ASME B1.13M-2001 TABLE 1 GENERAL SYMBOLS Symbol [Note (111 Symbol [Note (111 Explanation El Major diameter internal thread Minor diameter internal thread Pitch diameter internal thread Letter designations for tolerance positions for lower deviation, internal thread h Letter designations for tolerance positions for upper deviation, external thread Pitch diameter external thread Rounded form minor diameter external thread es Upper deviation, external thread allowance (fundamental deviation). See Fig. 4. In the IS0 System es is always negative for an allowance fit or zero for no allowance. e¡ Lower deviation, external thread [equals the allowance (fundamental deviation) plus the tolerance]. See Fig. 4. In the IS0 system ei is always negative for an allowance fit. H Height of fundamental triangle LE Length of engagement LH Left hand thread Pitch External thread root radius Tolerance Tolerances for Dl, D2 Tolerances for d, d2 Upper deviation, internal thread [equals the allowance (fundamental deviation) plus the tolerance]. See Fia. 4. Lower deviation, internal thread allowance (fundamental deviation). See Fig. 4. G, H Major diameter external thread Minor diameter external thread Explanation NOTE: (11 Subscripts "bsc," "max." and "min." indicate "basic," "maximum," and "minimum" sizes, respectively. 1.6 General Symbols 2 TERMINOLOGY The general symbols used to describe the metric screw thread forms are shown in Table 1. 2.1 Definitions allowance: the prescribed difference between the design (maximum material) size and the basic size. It is numerically equal to the absolute value of the IS0 term fundamental deviation. 1.7 Units All dimensions and all values in the formulas are expressed in millimeters unless otherwise noted. Values in terms of sharp vee-thread height (height of fundamental triangle), H, are used to be consistent with I S 0 Standards, but actual formulations and calculations are based on values of pitch, P . See Table 2. --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- NOTE: Allowance is not an IS0 metric screw thread term but will be used together with the IS0 term fundamental deviation. 1.8 Federal Government Use basic thread profle: the cyclic outline, in an axial plane, of the permanently established boundary between the provinces of the external and internal threads. All deviations are with respect to this boundary. See Figs. 1 and 4. When this Standard is approved by the Department of Defense and Federal Agencies and is incorporated into FED-STD-H28/21, Screw Thread Standards for Federal Services Section 21, the use of this Standard by the Federal Government is subject to all the requirements and limitations of FED-STD-H28/21. bolt thread ( e x t e m l thread): the term used in IS0 metric thread standards to describe all extemal threads. All symbols associated with external threads are designated with lowercase letters. This Standard will refer only to external threads in accordance with U.S. practice. 2 Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. ASME B1.13M-2001 METRIC SCREW THREADS: M PROFILE - m a m w - w o w r - N 222 - r c mm m w m --ln '"9 O 0 0 ¡-au ¡ -ew w m m m m 'CY O 0 0 o m w mmco m N * 2cz 00'0' E ÖZ m e * 2cz 000 mcuw mm w m w o m .--- 000 o m 0 wcvm w w m W O N 977 O 0 0 --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- w-¡(Dam 999 O 0 0 o m m Zw GmzwI 999 O 0 0 888 N N ~ 009 m Y?(? O 0 0 3 Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. METRIC SCREW THREADS: M PROFILE ASME B1.13M-2001 Internal Threads L- D bsc, d bsc I h I \ I \ 0 2 bsc, d2 bsc 1 Dl bsc, dl bsc l External Threads GENERAL NOTES: +- Axis of screw thread - - H = ""/2 X P = 0.866025 P 0.125 H = 0.108253 P 0.250 H = 0.216506 P 0.375 H = 0.324760 P 0.625 H = 0.541266 P FIG. 1 BASIC M THREAD PROFILE (IS0 68-1 BASIC PROFILE) crest diameter: the major diameter of an external thread and the minor diameter of an internal thread. upper deviation, es, for an external thread and the lower deviation, EI, for an internal thread. See Fig. 4; also see allowance and tolerance position. design prufiles: the maximum material profiles permitted for external and internal threads for a specified tolerance class. See Figs. 2 and 3. NOTE: The U.S. term allowance will be used as a primary term in this Standard, where applicable. deviation: in IS0 usage, the algebraic difference between a size (actual, maximum, minimum, etc.) and the corresponding basic size. The term deviation does not necessady indicate an error. lower deviation: the algebraic difference between the minimum limit of size and the corresponding basic size. See para. 5.1.4. fit: the general term used to signify range of tightness or looseness that results from application of a specific combination of allowances and tolerances in mating parts. nut thread (internul thread): a term used in IS0 memc thread standards to describe all internal threads. All symbols associated with internal threads are designated with uppercase letters. This Standard will refer to the term internal thread in accordance with U.S. practice. fundamental deviation: for standard threads, the deviation (upper or lower) closer to the basic size. It is the --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- Copyright ASME International Provided by IHS under license with ASME 4 Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. METRIC SCREW THREADS: ASME B1.13M-2001 M PROFILE Dz min. pitch diam. D min. major diam. '\,' û1min. minor diam. I GENERAL NOTE: For dimensions, see Table 2. FIG. 2 INTERNAL THREAD, DESIGN M PROFILE WITH NO ALLOWANCE (FUNDAMENTAL DEVIATION) (MAXIMUM MATERIAL CONDITION) d max. major diam. 0.69717H 0.07217H d2 max. pitch diam. I l- dl basic minor diam. (Flat form) I &j nom. m k o r diam. (Rounded form) GENERAL NOTE: For dimensions, see Table 2. FIG. 3 EXTERNAL THREAD, DESIGN M PROFILE WITH NO ALLOWANCE (FUNDAMENTAL DEVIATION) (FLANKS AT MAXIMUM MATERIAL CONDITION) 5 --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. METRIC SCREW THREADS: M PROFILE ASME B1.13M-2001 G tolerance position for small allowance (fundamental deviation) H tolerance position for no allowance (fundamental deviation) Internal Thread i Zero line Basic es -$. e or ftolerance position for large allowance (fundamental deviation) g tolerance position for small allowance (fundamental deviation) h tolerance position for no allowance [fundamental deviation) FIG. 4 METRIC TOLERANCE SYSTEM FOR SCREW THREADS upper deviation: the algebraic difference between the maximum limit of size and the corresponding basic size. See para. 5.1.3. tolerance: the total amount of variation permitted for the size of a dimension. It is the difference between the maximum limit of size and the minimum limit of size (i.e., algebraical difference between the upper deviation and the lower deviation). The tolerance is an absolute value without sign. Tolerance for threads is applied to the design size in the direction of minimum material. Therefore, tolerances are applied as negative values on external threads and as positive values on internal threads. 3 SCREW THREAD PROFILE 3.1 Basic M Thread Profile The basic M thread profile also known as the IS0 68-1 Basic Profile for metric screw threads is depicted in Fig. 1 with the associated dimensionslisted in Table 2. tolerance class: the combination of a tolerance position with a tolerance grade. It specifies the allowance (fundamental deviation) and tolerance for the pitch and major diameters of external threads and the pitch and minor diameters of internal threads. 3.2 Design M Profiles 3.2.1 Internal Thread. The design M profile for the internal thread at the no allowance maximum material condition is the basic IS0 68-1 profile. See Fig. 2 and thread data in Table 2. tolerance grade: a numerical symbol that designates the tolerances of crest diameters and pitch diameters applied to the design profiles. 3.2.2 External Thread. The design M profile for the external thread at the no allowance maximum material condition is the basic I S 0 68-1 profile except where a rounded root is required. For the standard 0.125P min. radius, the IS0 68-1 profile is modified at the root with a 0.177838 truncation blending into two arcs with radii of 0.125P tangent to the thread flanks. See Fig. 3 and thread data in Table 2. tolerance position: a letter symbol that designates the position of the tolerance zone in relation to the basic size. This position provides the allowance (fundamental deviation). 6 Copyright ASME International Provided by IHS under license with ASME --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- c Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. ASME B1.13M-2001 METRIC SCREW THREADS: M PROFILE Upper limiting profile for rounded root [(Note (1)I A - 7Point of intersection Point of intersection max. truncation ú3 min. minor diam. I GENERAL NOTE: Section lined portions identify tolerance zone and unshaded portions indentify allowance (fundamental deviation). NOTE: (1) The upper limiting profile for rounded root form allows no tolerance for flank wear of a tool producing it and is therefore not to be used as a design profile. Rather, it is an indication of the limiting acceptable condition for the rounded root form which will pass a GO thread gage. FIG. 5 M PROFILE, EXTERNAL THREAD ROOT, UPPER AND LOWER LIMITING PROFILES FOR r min. =0.125P AND FOR FLAT ROOT FORM (SHOWN FOR TOLERANCE POSITION gl 3.3 Crest and Root Forms flank arcs that are joined by a tangential flat at the root. The limit values of the root radius r are specified in Table 3. The maximum truncation is: I 3.3.1 Rounded Crest and Root Forms. The crest and root tolerance zones at the major and minor diameters will permit rounded crest and root forms in both the external and internal threads. 4 3.3.2 External Thread Root. The root profile of the thread shall lie within the section lined tolerance zone shown in Fig. 5. For the rounded root thread, the root profile of the external thread shall lie within the section lined rounded root tolerance zone shown in Fig. 5. The profile shall be a continuous smoothly blended non-reversing curve, no part of which shall have a radius of less than 0.125P, which is tangential to the thread flank. The profile may comprise tangent - r min. { 1 - cos [ 60 deg - arc cos and the minimum truncation is 0.14434H. (See Fig. 5.) The M profile with a minimum root radius of 0.125P on the external thread is desirable for all threads but is required for threaded mechanical fasteners of S A E 51199, ASTM F 568M, and IS0 898-1 property class 8.8 (minimum tensile strength 800 MPa) and stronger. (See Fig. 5.) 7 --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. METRIC SCREW THREADS: M PROFILE ASME B1.13M-2001 TABLE 4 STANDARD COARSE PITCH M PROFILE GENERAL PURPOSE AND MECHANICAL FASTENER SERIES TABLE 3 LIMIT VALUES FOR M PROFILE MINIMUM ROUNDED ROOT RADIUS Min. Root Radius, 0.125P P Min. Root Radius, 0.125P P 0.2 0.25 0.3 0.025 0.031 0.038 1.25 1.5 1.75 O. 156 0.188 0.219 1.6 2 2.5 0.35 0.4 0.45 0.35 0.4 0.45 0.044 2 2.5 3 0.250 0.313 0.375 3 3.5 4 0.5 0.6 0.7 3.5 4 4.5 0.438 0.500 0.563 5 6 8 0.8 1 1.25 5 5.5 6 0.625 0.688 0.750 8 1.o00 10 12 14 16 1.5 1.75 2 2 Nominal Size Pitch Nominal Size Pitch ~~ 0.050 0.056 0.5 0.6 0.7 0.063 0.075 0.088 0.75 0.8 1 0.094 0.100 0.125 GENERAL NOTE: All dimensions are in millimeters. 20 22 24 27 30 2.5 2.5 [Note (li1 3 3 [Note (1)l 3.5 36 42 48 4 4.5 5 56 64 72 5.5 6 6 [Note i211 80 90 1O0 6 [Note í2)l 6 [Note (211 6 [Note i211 GENERAL NOTE: All dimensions are in millimeters. NOTES: (1) For high strength structural steel fasteners only. (2) Designated as part of 6 mm fine pitch series in IS0 261. 3.3.3 Internal Thread Root. The root profile shall not be smaller than the basic profile. The maximum major diameter shall not be sharp. 4.4 IS0 Metric Thread Series 4 SERIES OF THREADS The Thread Series given in Table 6 are identical to those published in IS0 261 for diameters of 1.6 mm and larger. Diametedpitch combinations from Tables 4 and 5 are shown in boldface. Selection of series shown in regular type shall be limited to unusual requirements where the selections in accordance with paras. 4.1, 4.2, and 4.3 cannot be used. 4.1 Standard Coarse Pitch General Purpose and Mechanical Fastener Series, M Profile The standard metric screw thread series for general purpose equipment’s threaded components design and mechanical fasteners is a coarse thread series. Their diametedpitch combinations are listed in Table 4. 5 ALLOWANCES AND TOLERANCES NOTE: The words course and j n e are given in order to conform to usage. No concept of quality shall be associated with these words. Coarse pitches only indicate the largest metric pitches used in current practice. 5.1 IS0 System of Limits and Fits as Applied to Screw Threads 4.3 Preferred Sizes 5.1.1 General. The international metric tolerance system is based on a system of limits and fits. The limits of the tolerances on the mating parts and their allowances (fundamental deviations) determine the fit of the assembly. For simplicity the system is described for cylindrical parts. Holes are equivalent to internally threaded surfaces and shafts to externally threaded surfaces. Diameterlpitch combinations shown in Table 4 are the preferred sizes and should be the first choice, as applicable. 5.1.2 Basic Size. This is the zero line or surface at assembly, where the interface of the two mating parts have a common reference. 4.2 Standard Fine Pitch M ProfileScrew Threads Table 5 lists additional diametedpitch combinations that are standard for general purpose equipment’s threaded components design. --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- Copyright ASME International Provided by IHS under license with ASME 8 Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. ASME B1.13M-2001 METRIC SCREW THREADS: M PROFILE TABLE 5 STANDARD FINE PITCH M PROFILE SCREW THREADS Nominal Size Nominal Size Pitch ... 8 10 12 14 1 0.75 1 15 16 17 18 20 1 1 1.5 1.5 22 24 25 27 30 ... ... 1.5 2 33 35 36 39 40 42 45 1 1.5 ... 1 ... 1.5 ... 1.25 1.25 1.5 ... 1.5 ... ... 1.5 2 2 ... 2 1.5 ... ... ... 2 2 1.5 ... ... 2 1.5 48 ... 50 1.5 ... 2 ... 55 56 60 64 65 70 72 75 80 85 90 95 1O0 105 110 120 130 140 150 160 170 180 190 200 interference fits). This makes the fundamental deviation negative for the shaft and equal to its upper deviation (es). The fundamental deviation is positive for the hole and equal to its lower deviation (EI>. See Fig. 4. Pitch 1.5 ... 1.5 ... ... ... 2 1.5 ... 1.5 ... 1.5 1.5 ... ... ... ... ... ... ... ... ... ... ... 2 2 2 2 2 ... ... ... ... ... ... 5.1.7 Tolerance. Defined by a series of numerical grades, each grade provides numerical values for nominal sizes corresponding to the standard tolerance. See para. 5.2. When the tolerance is applied to the schematic diagram, the tolerance for the part (shaft) continues to be negative. Thus, the tolerance plus the fit define the lower deviation (ei). The tolerance for the mating part (hole) continues to be positive. Thus, the tolerance plus the fit define the upper deviation (ES).A schematic example of the metric tolerance system as applied to metric screw threads is shown in Fig. 4. 2 2 2 2 2 2 2 2 3 5.2 Tolerance Grade (a) This is indicated by a number. The system provides for a series of tolerance grades for each of the four screw thread parameters (DI, d, Dz. dz). The tolerance grades for this Standard were selected from those given in IS0 965-1. (b) The underlined tolerance grades are used with normal length of thread engagement. 3 3 3 3 GENERAL NOTE: All dimensions are in millimeters. 5.1.3 Upper Deviation. This is the algebraic difference between the maximum limit of size and the basic size. It is designated by the French term écart superieur (ES for holes and es for shafts). i E characteristic Minor dim.of int. thds. Major d i m . of ext. thds. Pitch d i m . of int. thds. Pitch diam. of ext. thds. 5.1.4 Lower Deviation. This is the algebraic difference between the minimum limit of size and the basic size. It is designated by the French term écart inferieur (EI for holes and ei for shafts). Table Table Table Table 6,7, 8 6, 8 4, 5 , 6, 7, 8 3, 9, 5, 6 7, 8, 9 9 10 12 11 (a) This is indicated by a letter. This position is the allowance (fundamental deviation). A capital letter is used for internal threads and a lowercase letter for external threads. The system provides a series of tolerance positions for internal and external threads. These tolerance positions are as follows with the numerical values given in the appropriate table. (b) The underlined letters are used in this Standard. 5.1.6 Fits. Fits are determined by the fundamental deviation, which may be positive or negative, assigned to the mating parts. The selected fits can be clearance, transition, and interference. To illustrate fits schematically, a zero line is drawn to represent the basic size. By convention, the shaft always lies below the zero line and the hole lies above the zero line (except for Copyright ASME International Provided by IHS under license with ASME 4, 5 , 4, Applicable Table 5.3 Tolerance Position 5.1.5 Fundamental Deviations (Allowances). These are the deviations that are closest to the basic size. In Fig. 4 they would be EI and es. Fundamental deviations are designated by alphabetical letters. See para. 5.3. --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- Tolerance Grade Internai Threads External Threads G, H e, f, g, h Table 13 Table 13 9 Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. METRIC SCREW THREADS: M ASME B1.13M-2001 PROFILE TABLE 6 IS0 261 DIAMETER/PITCH COMBINATIONS FROM WHICH THE STANDARDS WERE SELECTED Nominal Diameters Pitches - ~~ Col. 1 Col. 2 Ist 2nd Choice Choice Col. 3 3rd Choice --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- 1.6 1.8 Fine Coarse 3 0.35 ... 0.35 2 0.4 3.5 4 ... ... ... 0.6 0.7 ... ... 0.75 4.5 0.8 5 5.5 ... 1 6 7 1 8 1.25 9 10 1.25 1.5 11 12 1.5 1.75 2 14 15 16 ... 2 17 18 ... 2.5 20 2.5 22 2.5 [Note í2)1 3 24 25 26 27 ... ... 3 [Note (2)l 28 30 ... 3.5 32 33 ... 3.5 35 [Note (411 36 ... 4 38 39 ... ... 0.45 0.5 0.45 2.2 2.5 3 ... 4 2 1.5 1.25 ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . .. . . . . .. . . . .. . . .. . .. . .. . .. . . . ... ... ... ... ... ... ... ... ... ... . .. ... ... .. . . . . 0.5 0.5 ... ... 0.5 ... 0.75 0.75 0.75 ... 0.75 ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .. . ... .. . 1.5 ... 2 2 1.5 1.5 ... ... ... 1.5 ... ... ... 1.5 1.5 1.5 ... ... 2 1.5 2 1.5 2 1.5 ... ... ... ... 1.5 2 1.5 2 1.5 2 1.5 2 2 1.5 1.5 ... ... 1.5 3 2 1.5 1.5 1.5 (3) [Note (3ì1 ... (3) [Note (311 ... . .. 3 2 1 0.75 1 1 1 1 1 ... 1.25 1.25 tNote(1)I 1 ... ... 1 ... ... ... ... ... 1 ... ... ... ... ... ... ... ... ... . .. .. . . . . 0.5 ... 0.75 ... 1.25 ... ... 0.5 0.35 0.25 1 1 1 1 1 1 . .. 1 1 1 . I . ... . .. ... ... ... ... ... 0.75 ... . .. . .. 0.2 ... ... 0.2 . .. ... 0.2 ... 0.25 . .. ... 0.25 . . . 0.35 ... ... 0.35 ... ... ... ... ... ... ... ... ... ... . . . ... ... ... ... ... ... ... ... ... _ . . ... ... . .. ... ... . . . ... ... ... ... ... ... . .. .. . ... 0.35 ... ... ... ... ... . . . . . . .. . . .. . . . . .. . . . . . . . . . . . . . .. . . . . . . . .. . . . . . . . ,. . . . . . . , . . .. . . .. . .. . .. . . . . . . . .. . . . . . . . .. . . . . .. . .. . . . . .. . .. . . . . . . . . . . . . .. . . . . . .. . .. . . . . .. . .. . . . .. . . .. ... ... ... ... . .. . . . .. . . . . . . . . .. . . . . .. ... ... ... ... ... ... ... ... . . . .. . . . . . .. .. . ... . .. ... . .. ... ... ... ... .. . ... ... ... ... ... . .. (continued) 10 Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. ASME B1.13M-2001 METRIC SCREW THREADS: M PROFILE TABLE 6 I S 0 261 DIAMETER/PITCH COMBINATIONS FROM WHICH THE STANDARDS WERE SELECTED (CONT'DI Pitches Nominal Diameters Col. 1 Ist Choice Col. 2 Col. 3 2nd 3rd Choice Choice 40 42 45 48 50 52 Fine Coarse 8 6 4 3 2 1.5 ... ... 3 3 3 2 1.5 ... ... ... ... 4.5 2 1.5 2 1.5 2 1.5 2 2 1.5 2 1.5 2 1.5 1.5 4.5 ... 5 ... ... ... ... ... ... ... ... ... ... ... ... 5 55 ... 5.5 56 58 60 ... 5.5 62 64 ... 6 65 68 ... 6 70 ... 75 ... ... 72 ... 76 78 80 82 ... ... ... 95 ... ... ... 105 ... ... 85 90 1O0 110 ... ... 115 120 ... 125 1 130 135 140 145 150 155 ... ... ... ... ... 160 165 170 175 180 ... ... ... ... ... ... ... 4 4 4 3 3 3 ... 4 4 4 3 3 3 ... ... ... ... ... ... 4 4 4 3 3 3 2 ... ... ... ... ... ... ... ... ... ... ... 4 4 4 3 3 3 2 2 2 1.5 4 4 4 3 3 3 2 1.5 2 2 1.5 2 ... 4 3 2 1.5 ... ... ... ... ... ... ... ... 8 8 ... 8 6 6 ... 6 4 ... ... 6 ... ... ... 6 6 4 4 6 6 2 2 2 1.5 1.5 1.5 1.5 1.5 1.5 1.5 2 ... 4 3 3 3 2 2 2 ... ... ... 6 6 4 4 4 3 3 3 2 2 2 ... ... ... 6 6 6 4 4 4 3 3 2 2 ... ... 3 2 6 6 6 4 4 4 3 3 3 2 ... ... 3 3 3 8 3 8 3 8 ... ... 8 3 3 3 2 ... ... ... 2 ... 2 ... 2 ... ... ... ... ... ... ... ... ... ... ... ... ... (continued) 11 Copyright ASME International Provided by IHS under license with ASME --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. METRIC SCREW THREADS: M PROFILE ASME B1.13M-2001 TABLE 6 I S 0 261 DIAMETER/PITCH COMBINATIONS FROM WHICH THE STANDARDS WERE SELECTED (CONT'D) Pitches Nominal Diameters Col. 1 1st Choice Col. 2 2nd Choice --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- Col. 3 3rd Choice Coarse 8 6 4 3 2 1.5 185 ... ... 6 4 3 ... ... 8 6 6 6 4 4 4 3 ... ... ... 6 6 6 4 4 4 3 3 3 ... ... ... ... 6 6 6 4 4 4 3 ... 3 3 ... ... ... ... ... ... ... 6 6 6 4 4 4 3 3 3 ... ... ... ... ... ... 6 6 6 4 4 4 ... ... 3 ... ... ... ... ... ... 6 6 6 4 4 4 ... ... ... ... ... ... ... 6 6 6 4 4 4 ... ... ... ... ... ... ... ... 6 6 4 4 ... ... 190 195 200 205 210 215 220 225 230 235 245 250 ... 8 ... 8 ... ... ... ... ... 8 ... 8 ... 8 ... ... ... 8 ... ... ... ... 285 290 ... ... ... ... ... ... 295 ... ... 255 260 265 270 275 280 300 ... ... ... ... ... ... ... 240 ' Fine 8 8 ... 8 ... 8 ... 8 3 3 ... ... ... ... ... ... ... ... ... ... GENERAL NOTE: All dimensions are in millimeters. NOTES: (1) Only for spark plugs for engines. (2) Only for high strength structural steel fasteners. (3) Pitches shown in parentheses are to be avoided as far as possible. (4) Only for nuts for bearings. 5.4 Allowance/Tolerance Formulas and Tables another only when the thread form is perfect. When required to inspect either the pitch diameter, the functional diameter, or both, for thread acceptance (see ASME B1.3), use the same limits of size for the appropriate thread size and class. (a) See section 6 for pitch and crest diameter allowance/tolerance formulas and tables. (b) Functional diameter size includes the effects of ail variations in pitch diameter, thread form and profile. The variations in the individual thread characteristics such as flank angle, lead, taper, and roundness on a given thread, cause the measurements of the pitch diameter and functional diameter to vary from one another on most threads. The pitch diameter and functional diameter on a given thread are equal to one 5.5 Selected Tolerance Classes 5.5.1 External Thread Tolerance Classes. Small allowance (fundamental deviation). For normal tolerance-tolerance class 6g6g. For tighter tolerancetolerance class 4g6g. 12 Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. i I ASME B I .I 3M-2001 METRIC SCREW THREADS: M PROFILE 5.9 Coated or Plated Threads 5.5.2 Internal Thread Tolerance Class. No allowance (fundamental deviation). Tolerance class 6H6H. Internal threads with allowance are not standard practice. See section 8 for dimensional accommodation and limits for coated threads. 5.6 Length of Thread Engagement 5.6.1 Normal Length of Thread Engagement. The pitch diameter tolerances specified herein are applicable to the limits of the normal length of thread engagement LE in Table 7. The limits were calculated by formulas given in para. 6.4. 6 DESIGN FORMULAS AND TABULATED VALUES FOR ALLOWANCES AND TOLERANCES 6.1 General 5.6.2 Short and Long Lengths of Thread Engagement When Gaged With Normal Length Contacts. For short LE length of thread engagement, reduce the pitch diameter tolerance of the external thread by one tolerance grade number. For long LE length of thread engagement, increase the allowance (fundamental deviation) at the pitch diameter of the external thread. For internal threads with long LE length of thread engagement, provide an allowance (fundamental deviation) corresponding to the next larger tolerance position. Thus, for the standard H position (no allowance), a tolerance position G would be provided. For assemblies with short or long lengths of engagement, the tolerance class adjustment may be applied to only one member. See Table 8. This section provides the formulas and tabulated values for I S 0 allowances and tolerances in accordance with IS0 965-1. It is to be used for size limit calculation for non-standard threads, when required. See para. 9.2 for applications and limitations of formulas and tables. 6.2 Rounding Procedure for Tabulated Values (u) The values for crest and pitch diameter tolerances (Tables 9, 10, 11, and 12), for length of engagement (Table 7), and for allowances/fundamental deviations (Table 13) have been calculated from formulas and then rounded off to the nearest values in the R40 series of preferred numbers in accordance with IS0 3 for the three decimal places required. If a fourth decimal place results, it is further rounded. (b) These rules of rounding have not always been used in order to produce a smooth progression. Same IS0 965-1. (c) The above procedures often result in a variation by one or more numerals in the last decimal pIace when comparing table and formula values. 5.7 Circular Runout Circular runout is the full indicator movement (FIM) (see ASME Y 14.5). Runout of the crest (minor diameter of internal thread or major diameter of external thread) relative to the pitch cylinder shall not be so great that the basic profile is transgressed. 5.7.1 Internal Thread. When measurement is specified, the runout of the minor diameter cylinder relative to the pitch cylinder on the internal thread shall not exceed the difference between the measured minor diameter and the basic minor diameter. An out-of-round pitch cylinder may reduce the available runout. 6.3 Allowances (Fundamental Deviations) The allowances (fundamental deviations) for internal and external threads have been calculated according to the following formulas and their rounded values given in Table 13. Allowance is the absolute value of fundamental deviation. 5.7.2 External Thread. When measurement is specified, the runout of the major diameter cylinder relative to the pitch cylinder on the external thread shall not exceed the difference between the measured major diameter and the basic major diameter. An outof-round pitch cylinder may reduce the available runout. internai External EZG = +(0.015 + 0.011P) es, = EI, = O esf = esp es,, 5.8 Lead and Flank Angle Tolerances - (0.05+ 0.011P) [Note (i)] - (0.03 + 0.011P) = -(0.015 + 0.011P) =O NOTE: See section 10. (1)Exceptions are values for threads with P 5 0.75 mm. 13 --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. METRIC SCREW THREADS: M PROFILE ASME B1.13M-2001 TABLE 7 LENGTH OF THREAD ENGAGEMENT (IS0 965-1) Length of Thread Engagement Basic Major Diameter, d bsc Over up to and incl. Short LE Normal LE Long LE up t o Pitch, up t o P and incl. Over and incl. Over --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- 1.5 2.8 0.2 0.25 0.35 0.4 0.45 0.5 0.6 0.8 1 1.3 0.5 0.6 0.8 1 1.3 1.5 1.9 2.6 3 3.8 1.5 1.9 2.6 3 3.8 2.8 5.6 0.35 0.5 0.6 0.7 0.75 0.8 1 1.5 1.7 2 2.2 2.5 1 1.5 1.7 2 2.2 2.5 3 4.5 5 6 6.7 7.5 3 4.5 5 6 6.7 7.5 7.1 9 12 15 7.1 9 12 15 ~ ~ 5.6 11.2 0.75 1 1.25 1.5 2.4 3 4 5 2.4 3 4 5 11.2 22.4 1 1.25 1.5 1.75 2 2.5 3.8 4.5 5.6 6 8 10 3.8 4.5 5.6 6 8 10 11 13 16 18 24 30 11 13 16 18 24 30 22.4 45 I 1.5 2 3 3.5 4 4.5 4 6.3 8.5 12 15 18 21 4 6.3 8.5 12 15 18 21 12 19 25 36 45 53 63 12 19 25 36 45 53 63 1.5 2 3 4 5 5.5 6 7.5 9.5 15 19 24 28 32 7.5 9.5 15 19 24 28 32 22 28 45 56 71 85 95 22 28 45 56 71 85 95 45 90 90 180 2 3 4 6 8 12 18 24 36 45 12 18 24 36 45 36 53 71 106 132 36 53 71 106 132 180 355 3 4 6 8 20 26 40 50 20 26 40 50 60 80 118 150 60 80 118 150 GENERAL NOTE: All dimensions are i n millimeters 14 Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. ASME B1.13M-2001 METRIC SCREW THREADS: M PROFILE TABLE 8 EXAMPLES OF TOLERANCE CLASSES REQUIRED FOR NORMAL GAGE LENGTH CONTACTS WITH VARIOUS THREAD ENGAGEMENT LENGTHS Normal LE Short LE Long LE 69 4969 6h [Note (111 4h6h [Note (111 6H 4H6H 5969 3969 5h6h 3h6h 5H 3H6H 6e6g 4e6g 6g6h 4g6h 6G 4G6G ~~ GENERAL NOTE: See para. 5.6.2. NOTE: (1) Applies to maximum material functional size (GOThread gage) for plated 69 and 4969 class threads respectively. --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- TABLE 9 MINOR DIAMETER TOLERANCES OF INTERNAL THREAD (TDq) (IS0 965-1) Tolerance Grade Pitch, P 4 5 6 [Note (111 7 8 0.2 0.25 0.3 0.038 0.045 0.053 ... 0.056 0.067 ... ... 0.35 0.4 0.45 0.063 0.071 0.080 0.090 0.100 o. 1O 0 0.112 0.125 ... ... ... ... ... ... ... ... ... ... ... 0.5 0.6 0.7 0.090 o. 1O0 0.112 0.112 0.125 0.140 0.140 0.160 0.180 0.180 0.200 0.224 ... ... ... 0.75 0.8 1 0.118 0.125 O. 150 0.150 0.160 0.190 0.190 0.200 0.236 0.236 0.250 0.300 0.315 0.375 1.25 1.5 1.75 0.170 o. 190 0.212 0.212 0.236 0.265 0.265 0.300 0.335 0.335 0.375 0.425 0.425 0.475 0.530 2 2.5 3 0.236 0.280 0.31 5 0.300 0.355 0.400 0.375 0.450 0.500 0.475 0.560 0.630 0.600 0.710 0.800 3.5 4 4.5 0.355 0.375 0.425 0.450 0.475 0.530 0.560 0.600 0.670 0.710 0.750 0.850 0.900 0.950 1.060 5 5.5 6 8 0.450 0.475 0.500 0.630 0.560 0.600 0.630 0.800 0.710 0.750 0.800 1.o00 0.900 1.120 1.180 1.250 1.600 0.085 0.080 ~ ~ ... ... 0.950 1.o00 1.250 ~~ GENERAL NOTE: All dimensions are in millimeters. NOTE: (1) Tabulated in this Standard for M Internal Threads. 15 Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. METRIC SCREW THREADS: M PROFILE ASME B1.13M-2001 6.5 Crest Diameter Tolerances TABLE 10 MAJOR DIAMETER TOLERANCES OF EXTERNAL THREAD (Td) (IS0 965-1) 6.5.1 Tolerances for Minor Diameter of Internal Thread (TD,). The TD1 tolerances for grade 6 are calculated according to the following formulas and rounded: (a) Pitches 0.2 to 0.8 mm Tolerance Grade Pitch, P 4 6 [Note (111 8 0.2 0.25 0.3 0.036 0.042 0.048 0.056 0.067 0.075 ... ... ... 0.35 0.4 0.45 0.053 0.060 0.063 0.085 0.095 o.1 O0 0.5 0.6 0.7 0.067 0.080 0.090 O.106 0.125 0.140 ... ... ... ... ... ... 0.75 0.8 1 0.090 0.095 0.112 0.140 0.150 0.180 0.236 0.280 1.25 1.5 1.75 0.132 O.150 0.170 0.212 0.236 0.265 0.335 0.375 0.425 2 2.5 3 0.180 0.212 0.236 0.280 0.335 0.375 0.450 0.530 0.600 3.5 4 4.5 0.265 0.300 0.315 0.425 0.475 0.500 0.670 0.750 0.800 5 5.5 6 8 0.335 0.355 0.375 0.450 0.530 0.560 0.600 0.71 O 0.850 0.900 0.950 1.180 TD1 (6) = 0.433P - 0.190P’.22 (b) Pitches 1 mm and coarser TD1 (6) = 0.230P0.7 6.5.1.1 The following rounded TD1 tolerance values for the other grades are obtained from the TD1(6) values (in Table 9): Tolerance Grade TDI(4) = TD1 (5) = TDI (6) TD1 (7) = TD1 (8) = 4 5 6 7 8 0.63TD1 (6) O.8TD1 (6) 1.25TD1 (6) 1.612)i (6) 6.5.2 Tolerances for Major Diameter of External Thread (Td), Grade 6. The Td tolerances for grade 6 are calculated according to the following formula and rounded: 0.00315 -Td (6) = 0.18 fi 6.5.2.1 The following rounded Td tolerance values for the other grades are obtained from the Td (6) values (see Table 10): GENERAL NOTE: All dimensions are in millimeters. NOTE: (1) Tabulated in this Standard for M External Threads. 6.4 Length of Thread Engagement For the calculation of the limits of the normal length of thread engagement in Table 7, the following formulas have been used and their values rounded. For each pitch ( P ) within a certain diameter range, d has been set equal to the smallest diameter within the table range. Normal Tolerance Tolerance Grade Tolerance 4 Td (4) = 0.63Td (6) 6 8 Td (6) Td (8) = 1.6Td (6) 6.6 Pitch Diameter Tolerances 6.6.1 Tolerances for Pitch Diameter of External Thread (i&). Td2 (6) values in Table 11 are calculated according to the following formula and rounded. (d is equal to the geometrical mean value of the diameter range limits, i.e., the square root of the product of smallest and largest diameters.) LE min. = 2.24Pd0.2 Normal LE ma. = 6.7Pdo.’ Td2 (6) = 0.09P0.4d0.’ 16 Copyright ASME International Provided by IHS under license with ASME --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- ... Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. ASME B1.13M-2001 METRIC SCREW THREADS: M PROFILE TABLE II PITCH DIAMETER TOLERANCE OF EXTERNAL THREAD (T&) (IS0 965-1) Basic Major Diameter, d Over up t o and incl. Pitch, P Tolerance Grade 3 4 [Noteíl)] 5 6 [Noteíl)] 7 a 9 0.2 0.25 0.35 0.4 0.45 0.025 0.028 0.032 0.034 0.036 0.032 0.036 0.040 0.042 0.045 0.040 0.045 0.050 0.053 0.056 0.050 0.056 0.063 0.067 0.071 ... ... ... ... 0.080 0.085 0.090 0.35 0.5 0.6 0.7 0.75 0.8 0.034 0.038 0.042 0.045 0.045 0.048 0.042 0.048 0.053 0.056 0.056 0.060 0.053 0.060 0.067 0.071 0.071 0.075 0.067 0.075 0.085 0.090 0.090 0.095 0.085 0.095 O. 106 0.112 0.112 0.118 ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 0.150 0.190 0.75 1 1.25 1.5 0.050 0.056 0.060 0.067 0.063 0.071 0.075 0.085 0.080 0.090 0.095 0.106 0.100 0.125 0.140 0.150 0.170 ... ... 0.180 0.190 0.212 0.224 0.236 0.265 1 1.25 1.5 1.75 2 2.5 0.060 0.067 0.071 0.075 0.080 0.085 0.075 0.085 0.090 0.095 0.100 0.106 0.095 O. 106 0.112 0.118 0.125 O. 132 0.160 0.170 0.150 0.170 0.180 0.190 0.200 0.212 0.190 0.212 0.224 0.236 0.250 0.265 0.236 0.265 0.280 0.300 0.315 0.335 1 1.5 2 3 3.5 4 4.5 0.063 0.075 0.085 0.100 O. 106 0.112 0.1 18 0.080 0.095 0.106 0.1 25 O. 132 O. 140 0.150 o. 1O0 0.118 0.132 0.160 0.170 0.180 o. 190 0.125 O. 150 0.170 0.200 0.212 0.224 0.236 0.160 0.190 0.212 0.250 0.265 0.280 0.300 0.200 0.236 0.265 0.315 0.335 0.355 0.375 0.250 0.300 0.335 0.400 0.425 0.450 0.475 ~ _ _ _ _ _ _ ~ ~ _ _ _ _ 1.5 2.8 --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- 2.8 5.6 5.6 11.2 22.4 11.2 22.4 45 0.112 0.118 0.132 0.1 18 O. 132 0.140 O. 150 ... 45 90 1.5 2 3 4 5 5.5 6 0.080 0.090 0.106 0.118 0.125 0.132 0.140 0.100 0.1 12 0.132 0.150 0.160 O. 170 O. 180 0.125 0.140 0.170 0.190 0.200 0.212 0.224 0.160 0.180 0.212 0.236 0.250 0.265 0.280 0.200 0.224 0.265 0.300 0.315 0.335 0.355 0.250 0.280 0.335 0.375 0.400 0.425 0.450 0.315 0.355 0.425 0.475 0.500 0.530 0.560 90 180 2 0.1 18 4 6 8 0.095 0.112 0.125 0.150 0.170 0.140 O. 160 0.190 0.212 0.150 0.180 0.200 0.236 0.265 0.190 0.224 0.250 0.300 0.335 0.236 0.280 0.315 0.375 0.425 0.300 0.355 0.400 0.475 0.530 0.375 0.450 0.500 0.600 0.670 3 4 6 8 0.125 0.140 0.160 O. 180 O. 160 0.180 0.200 0.224 0.200 0.224 0.250 0.280 0.250 0.280 0.315 0.355 0.315 0.355 0.400 0.450 0.400 0.450 0.500 0.560 0.500 0.560 0.630 0.710 ~ 3 180 355 GENERAL NOTE: All dimensions are in millimeters. NOTE: (1) Tabulated in this Standard for M Threads 17 Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. METRIC SCREW THREADS: M PROFILE ASME B1.13M-2001 TABLE 12 PITCH DIAMETER TOLERANCE OF INTERNAL THREAD (TD,) (IS0 965-1) Basic Major Diameter, D up t o Over 1.5 2.8 5.6 and incl. 2.8 5.6 11.2 Pitch, Tolerance Grade P 4 5 6 [Note(l)l 7 8 0.2 0.25 0.35 0.4 0.45 0.042 0.048 0.053 0.056 0.060 ... 0.060 0.067 0.071 0.075 ... ... ... ... ... ... 0.085 0.090 0.095 0.35 0.5 0.6 0.7 0.75 0.8 0.056 0.063 0.071 0.075 0.075 0.080 0.071 0.080 0.090 0.095 0.095 0.100 0.75 1 1.25 1.5 0.085 0.095 0.100 0.112 . ... - ... ... ... 0.090 0.100 0.112 0.118 0.118 0.125 0.125 O. 140 0.150 0.150 0.160 0.200 0.106 0.1 18 0.125 0.140 0.132 0.150 0.160 0.180 0.170 0.190 0.200 0.224 0.236 0.250 0.280 ... ... ... ... ... ... ... ... ... 11.2 22.4 1 1.25 1.5 1.75 2 2.5 0.100 0.112 0.1 18 0.125 0.132 0.140 0.125 0.140 0.150 0.160 0.170 0.180 0.160 0.180 0.190 0.200 0.212 0.224 0.200 0.224 0.236 0.250 0.265 0.280 0.250 0.280 0.300 0.315 0.335 0.355 22.4 45 1 1.5 2 3 3.5 4 4.5 0.106 0.125 0.140 0.170 0.180 0.190 0.200 0.132 0.160 0.180 0.212 0.224 0.236 0.250 0.170 0.200 0.224 0.265 0.280 0.300 0.315 0.212 0.250 0.280 0.335 0.355 0.375 0.400 0.315 0.355 0.425 0.450 0.475 0.500 1.5 2 3 4 5 5.5 6 0.132 0.150 0.180 0.200 0.212 0.224 0.236 0.170 0.190 0.224 0.250 0.265 0.280 0.300 0.212 0.236 0.280 0.315 0.335 0.355 0.375 0.265 0.300 0.355 0.400 0.425 0.450 0.475 0.335 0.375 0.450 0.500 0.530 0.560 0.600 ... 90 90 180 2 3 4 6 8 0.160 0.190 0.212 0.250 0.280 0.200 0.236 0.265 0.315 0.355 0.250 0.300 0.335 0.400 0.450 0.315 0.375 0.425 0.500 0.560 0.400 0.475 0.530 0.630 0.710 355 3 4 6 8 0.212 0.236 0.265 0.300 0.265 0.300 0.335 0.375 0.335 0.375 0.425 0.475 0.425 0.475 0.530 0.600 0.530 0.600 0.670 0.750 --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- 45 180 GENERAL NOTE: All dimensions are in millimeters. NOTE: (1) Tabulated in this Standard for M Threads. 18 Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. ASME B1.13M-2001 METRIC SCREW THREADS: M PROFILE Example: 6.6.1.1 The following rounded Td2 tolerance values for the other grades are obtained from the Tdz (6) values (see Table li). No Tú2 values are given in Table 11 when values calculated according to the given formula exceed the Td values in the tolerance grades which are combined in the tables for recommended tolerance classes. Thread tolerance class designation for pitch diameter Thread tolerance class designation for major diameter Tolerance class Tolerance Grade 3 4 5 6 7 8 9 Internal thread Tolerance Td2 Td2 Td2 Td2 Td2 Td2 Tdz LL Thread class designation for pitch and minor diameter with identical tolerance class designations ( 3 ) = 0.5Td2 ( 6 ) (4) = O.63Td2 (6) (5) = 0.8Td2 ( 6 ) (6) (7) = 1.25Td2 (6) ( 8 ) = 1.6Td2 (6) (9) = 2Td2 ( 6 ) 7.2 Designation of Standard Screw Threads Metric screw threads are identified by the letter (M) for the thread form profile, followed by the nominal diameter size and the pitch expressed in millimeters, separated by the sign ( x ) and followed by the tolerance class separated by a dash (-) from the pitch. The simplified international practice for designating coarse pitch M profile screw threads i s t o leave off the pitch. Thus a M14 x 2 thread is designated as just M14. To prevent misunderstanding, it is mandatory to use the value for pitch in all designations. International practice permits a thread designation with tolerance class not specified for classes 6H and 6g. To prevent misunderstanding, it is mandatory to specify the tolerance class for all thread designations. Thread acceptability gaging system requirements of ASME B 1.3 may be added to the thread size designation as noted in examples or as specified in pertinent documentation, such as the drawing or procurement document. (a) Internal Thread M Profile, Right Hand 6.6.2 Tolerances for Pitch Diameter of Internal Thread (i&). The rounded TDz tolerance values in Table 12 are calculated using formulas below and Td2 (6) values from Table 11. No TD2 values are given in Table 12 when values calculated according to the given formula exceed 0.2%'. Tolerance Grade 4 5 6 7 8 Tolerance TDt (4) = TD2 (5) = TD2 (6) = TD.2 (7) = TD2 ( 8 ) = 0.85Td2 (6) 1.06Tdz (6) 1.32Td2 (6) 1.7Td2 ( 6 ) 2.12Td2 ( 6 ) 7 DESIGNATION OF SCREW THREADS r 7.1 General (a) The complete designation of a screw thread gives the thread symbol, the nominal size, the pitch, and the thread tolerance class. (b) The tolerance class designation gives the class Metric thread symbol, IS0 68-1 Metric thread form rf- Tolerance class size 7 Gaging system (c) The class designation consists of a number indicating the tolerance grade followed by a letter indicating the tolerance position. Tolerance position Tolerance grade Pitch diameter Tolerance symbol 19 --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. METRIC SCREW THREADS: M PROFILE ASME B1.13M-2001 Examples: (b) External Thread M Profile, Right Hand M6 M6 Metric thread symbol, IS0 68-1 Metric thread form M 6 x 1 -4969 X 1 - 6H/6g 1 - 6H/4g6g 7.4 Designation for Rounded Root External Thread Gaging system - I X (22) 7.4.1 Modified IS0 68-1 Thread With Radius Root r min. = 0.125P. For the mandatory conditionTolerance grade Tolerance position external fasteners of property class 8.8 and stronger (see para. 3.3.2), no special designation is required. Other parts requiring a 0.125P root radius must specify that radius as in para. 7.4.2. Pitch diameter Tolerance symbol Tolerance grade 7.4.2 Designation for Special Rounded Root Thread. When a special rounded root thread is Unless otherwise specified in the designation, the screw thread helix is right hand. required, its external thread designation is suffixed by the minimum root radius value in millimeters and the letter R . 7.2.1 Designation of Left Hand Thread. When left hand thread is specified, the tolerance class designation is followed by a dash and LH. Example: Example: +1 Minimum Root Radius X 1 - 5H6H - LH (23) M42 7.2.2 Designation for Identical Tolerance Classes. If the two tolerance class designations for a - 6 g - 0.63R Where the limits of size of the major diameter of an external thread or the minor diameter of an internal thread are modified, the thread designation is suffixed by the letters MOD followed by the modified diameter limits. Example: X 4.5 7.5 Designation of Threads Having Modified Crests thread are identical, it is not necessary to repeat the symbols. M6 X 1 - 6H (21) Example: External thread M profile, major diam. reduced 0.075 nun. 7.2.3 Designations Using all Capital Letters. When computer and teletype thread designations use all capital letters, the external or internal thread may need further identification. Thus the tolerance class identification is followed by the abbreviations EXT or INT in capital letters. .- M6 X 1 - 4h6h MOD Major diam. = 5.745 - 5.925 MOD Example: Internal thread M profile, minor diam, increased 0.075 mm. M6 Examples: X Minor - 4H5H MOD diam. = 5.101 - 5.291 MOD 1 M6 X 1 - 4G6G EXT M6X1-6HINT 7.6 Designation of Special Threads Special diameter-pitch threads, developed in accordance with this Standard, shall be identified by the letters SPL following the tolerance class. Below the designation shall be specified the limits of size for major diameter, pitch diameter, and minor diameter. 7.3 Designation for Thread Fit A fit between mating threads is indicated by the internal thread tolerance class followed by the external thread tolerance class separated by a slash. 20 Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- M6 ASME B1.13M-2001 METRIC SCREW THREADS: M PROFILE TABLE 13 ALLOWANCE (FUNDAMENTAL DEVIATION) FOR INTERNAL AND EXTERNAL THREADS (IS0 965-1) Allowance (Fundamental Deviation) [Note (111 External Thread, d. 42 e, r; es es O O O ... co.019 +0.019 +0.020 O O O 0.5 0.6 0.7 +0.020 +0.021 +0.022 0.75 0.8 Pitch, P G. EI H [Note (211. EI 0.2 0.25 0.3 +0.017 +0.018 +0.018 0.35 0.4 0.45 h. g [Note (311, es es ... ... ... -0.017 -0.018 -0.018 O O O ... ... ... -0.034 -0.034 -0.035 -0.019 -0.019 -0.020 O O O O O O -0.050 -0.053 -0.056 -0.036 -0.036 -0.038 -0.020 -0.021 -0.022 O O O 1 +0.022 +0.024 +0.026 O O O -0.056 -0.060 -0.060 -0.038 -0.038 -0.040 -0.022 -0.024 -0.026 O O O 1.25 1.5 1.75 +0.028 +0.032 +0.034 O O O -0.063 -0.067 -0.071 -0.042 -0.045 -0.048 -0.028 -0.032 -0.034 O O O 2 2.5 3 +0.038 +0.042 +0.048 O -0.071 -0.080 -0.085 -0.052 -0.058 -0.063 -0.038 -0.042 -0.048 O O O 3.5 4 4.5 +0.053 +0.060 +0.063 O O O -0.090 -0.095 -0.1O0 -0.070 -0.075 -0.080 -0,053 -0.060 -0.063 O O O 5 5.5 6 8 +0.071 +0.075 +0.080 +o. 1 O0 O O O O -0.106 -0.112 -0.118 -0.140 -0.085 -0.090 -0.095 -0.118 -0.071 -0,075 -0.080 -0.100 ... ... O O O O O O NOTES: (1)Allowance is the absolute value of Fundamental Deviation. (2)Tabulated in this Standard for M Internal Threads. (3)Tabulated in this Standard for M External Threads. 7.7 Designation of Multiple Start Threads Example: External thread - 4h6h - SPL (22) - 6.500 Pitch diam. = 5.779 - 5.850 Minor d i m . = 5.163 - 5.386 M6.5 X 1 When a thread is required with a multiple start, it is designated by specifying sequentially M for metric thread, nominal diameter size, X , L for lead, lead value, P for pitch, pitch value, parenthesis, script number of starts, and the word ?stark?, close parenthesis, dash, tolerance class. Major diam. = 6.320 Example: Internai thread M6.5 X 1 - 4H5H - SPL (23) Examples: Major diam. = 6.500 min. - 5.945 5.417 - 5.607 - 4h6h Pitch diam. = 5.850 M16 Minor diam. = M14 x UP2 (Three Starts) - 6H X Up;! (TWO Starts) 21 Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- internal Thread, 4.Dl METRIC SCREW THREADS: M PROFILE ASME B'1.13M-2001 NOTE: The term coating refers to one or more applications of additive material to the threads, including dry film lubricants, but excluding soft or liquid lubricants that are readily displaced in assembly and gaging. Plating is therefore included as coating in the text. 7.8 Designation of Coated or Plated Threads 7.8.1 Designation of Coated or Plated M Threads. Specify if the tolerance class is after coating or after plating. If no designation of after coating or after plating is specified, the tolerance class applies before coating or plating in accordance with IS0 practice. After plating the thread profile shall not transgress the maximum material limits for the tolerance position 8.2 Material Limits for Coated Threads Unless otherwise specified, size limits for standard external thread tolerance classes 6g and 4g6g apply prior to coating. The external thread allowance may thus be used to accommodate the coating thickness on coated parts, provided that the maximum coating thickness is no more than '/4 of the allowance. Thus, a 6g thread after coating is subject to acceptance using a basic size 6h GO thread gage and a 4g6g thread, a 4h6h GO thread gage. (Basic thread sizes, tolerance position h, are tabulated in Nonmandatory Appendix D.)Minimum material, LO or NOT-GO gages would be 6g and 4g6g, respectively. Where external thread has no allowance or allowance must be maintained after coating, and for standard internal threads, sufficient allowance must be provided prior to coating to assure that finished product threads do not exceed the maximum material limits specified. For thread classes with tolerance position H or h, coating allowances in accordance with Table 13 for positions G or g respectively, should be applied whenever possible. See paras. 8.4,8.5, and 8.6. HA. Examples: X 1 M6 X 1 - 6h - 6g AFTER COATING or AFTER PLATING AFTER COATING or AFTER PLATING 7.8.2 Where the tolerance position G/g is insufficient relief for the application to hold the threads within product limits, the coating or plating allowance may be specified as the maximum and minimum limits of size for minor and pitch diameter of internal threads or major and pitch diameter of external threads before coating or plating. See section 8. Example: Allowance on external thread M profile based on 0.010 rnm min. coating thickness M6 X 1 - 4h6h - After Coating Before Coating Major diarn. = 5.780 - 5.940 Pitch diarn. = 5.239 - 5.290 8.3 Dimensional Effects of Coating ( a ) On a cylindrical surface, the effect of coating is to change the diameter by twice the coating thickness - one coating thickness on each side of the cylinder. Because the coating thickness is measured perpendicular to the coated surface, while the pitch diameter is measured perpendicular to the thread axis, the effect of a uniformly coated thread flank on the pitch diameter is a change four times the thickness of coating on the flank. See Fig. 6. The diameters of extemal threads before coating will be smaller while the diameters of internal threads before coating will be larger than the coated diameters. (b) Most coatings and platings do not apply uniformly on threads (see Fig. 7). Different coating materials and processes have different application characteristics. The threaded part's overall length and other configuration Characteristics also affect the way coatings build up on the threads. Paragraphs 8.4, 8.5, and 8.6 provide general guidelines for calculating pre-coating thread size to allow for coating build-up while preventing interference in assembly. The exact precoating thread size for a given part with a given type of coating will frequently have to be developed by the producer experimentally. 8 DIMENSIONAL ACCOMMODATION OF COATING OR PLATING FOR 60 DEG THREADS 8.1 Introduction It is not within the scope of this Standard to make recommendations for thickness of, or to specify limits for coatings. However, it will aid mechanical interchangeability if certain principles are followed wherever conditions pennit. The following guides should be helpful in determining the amount and direction of the alterations to establish applicable limits of size before coating. Some commonly used and firmly established processes for heavy coatings, such as hot galvanizing, do not fall within the scope of the section. Nonmandatory Appendix E contains information on internal threads of tolerance class 6AX, which follow USA practice of overtapping to accommodate as-coated hot-dip galvanized external threads. 22 Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- M6 ASME B1.13M-2001 METRIC SCREW THREADS: M PROFILE I l Pitch diameter of screw before coating Pitch diameter of screw after coating I t = thickness of coating a = pitch diameter change due to coating Sine 30 deg (in small triangle above) = 0.5a = 0.5 0.25a = rand a = 4t or the pitch diameter of a 60 deg thread changes four times the thickness of coating FIG. 6 RATIO OF PITCH DIAMETER CHANGE TO THICKNESS OF COATING ON 60 deg THREADS --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- Copyright ASME International Provided by IHS under license with ASME 23 Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. METRIC SCREW THREADS: M PROFILE ASME B1.13M-2001 The effects of electroplating on the functional diameter \ GENERAL NOTE: Electrodeposited coatings build up more heavily at sharp corners; greater at the the extreme ends and edges of a length; and is least in the center and recessed areas. FIG. 7 EFFECT OF ELECTRODEPOSITED COATINGS ON 60 deg EXTERNAL THREADS --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- (u) maximum pitch diameter by 4 times maximum coating thickness; (b) minimum pitch diameter by 4 times minimum coating thickness; (c) maximum major diameter by 2 times maximum coating thickness; (d) minimum major diameter by 2 times minimum coating thickness. 8.4 External Thread With Allowance Available for Coating 8.4.1 Maximum and Minimum Coating Thickness Specified. Allowance on pitch diameter is sufficient for uniform coating if four times the maximum coating thickness is equal to or less than the allowance tabulated in Table 13 or 14. 8.4.2 Only Nominal or Minimum Coating Thickness Specified. If no coating thickness tolerance is given, it is recommended that a tolerance of plus 50% of the nominal or minimum thickness be assumed. Then, allowance on pitch diameter is sufficient for uniform coating if six times the specified coating thickness is equal to or less than the allowance tabulated in Table 13 or 14. Example: - MIO X 1.5 6g After Coating Coating Thickness 0.005 0.008 - To determine the before coating maximum material sizes, decrease the maximum pitch diameter of 8.994 by 0.032 (4 X 0.008) to 8.962 and the maximum major diameter of 9.968 by 0.016 (2 x 0.008) to 9.952. For the before coating minimum sizes, decrease the minimum pitch diameter of 8.862 by 0.020 (4 X 0.005) to 8.842 and the minimum major diameter of 9.732 by 0.010 (2 X 0.005) to 9.722. The before coating sizes should be included in the thread designation. (See para. 7.8.2.) 8.4.3 Applicability. Except for some small size threads or for threads with thick coatings, standard tolerance classes 6g and 4g6g provide sufficient allowance for coating. See para. 8.2. 8.5 External Thread With No Allowance for Coating 8.5.2 Only Nominal or Minimum Coating Thickness Specified. If no coating thickness tolerance is given, it is recommended that a tolerance of plus 50% of the nominal or minimum thickness be assumed. 8.5.1 Maximum and Minimum Coating Thickness Specified. To determine before coating limits, for a uniformiy coated thread, decrease 24 Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. 1 1 ASME B1.13M-2001 METRIC SCREW THREADS: M PROFILE or nominal coating thickness, when a tolerance is not specified; (b) maximum pitch diameter by 4 times minimum or nominal coating thickness; (c) minimum minor diameter by 2 times maximum coating thickness, if specified, or by 3 times minimum or nominal coating thickness; (d) maximum minor diameter by 2 times minimum or nominal coating thickness. Then, to determine before coating limits for a uniformly coated thread, decrease (u) maximum pitch diameter by 6 times coating thickness; (b) minimum pitch diameter by 4 times coating thickness; (c) maximum major diameter by 3 times coating thickness; ( d ) minimum major diameter by 2 times coating thickness. Example: M14 X 8.7 Electrodeposited Coatings 2 - 4h6h (22)Coating Thickness 0.008 Electroplated coatings do not cover threads uniformly. Deposits build up more on thread crests than on thread flanks and coating thickness is greater on the lead end of a thread than on threads in the center of a part. The guidelines for calculating pre-coating thread sizes for uniformly coated threads can be used as a starting place in detemining the pre-coating thread sizes on a given part, but the exact sizes for any given part may have to be determined by trial and error experimentation. One of the effects of electro-deposited coatings not applying uniformly is that the functional diameter of an external thread will generally increase by a greater magnitude than the increase of the pitch diameter on a given part. Depending on an externally threaded part’s configuration, an electro-deposited coating of 0.0025 mm on a thread flank will probably result in a growth of the pitch diameter of approximately 0.0100 mm or more, but the functional diameter may change by as much as 0.0150 mm or more. In the case of internally threaded parts, electro-deposited coatings cause the pitch diameter and functional diameter to decrease in size, with the pitch diameter decreasing less than the functional diameter on a given part. Another effect of the non-uniform build-up of electrodeposited coatings is that the coating thickness on the lead end of a thread is commonly greater than the thickness on the threads in the center of the part. This results in the pitch diameter and the functional diameter of a thread to be considerably larger on the end of the part than their comparable measurements away from the end. The longer the part, in the case of external threads, or the thicker the part, in the case of internal threads, the greater these differences tend to be. The part producer and the plater cannot control this phenomenon. It is the nature of electro-deposited coatings on threaded parts. It is conceivable that a part’s dimensions can measure within limits on the lead threads and be beyond their limits on the threads away from the lead threads. Since allowance for tolerance position g is 0.038, the maximum thickness of coating which may be applied is equal to 0.038 divided by 6 or 0.0063. This is not sufficient for the required coating of 0.008 so additional adjustments to the before-coated pitch and major diameters must be made. To determine the before coating maximum material sizes, decrease the maximum pitch diameter of 12.701 by 0.048 (6 x 0.008) to 12.653 and maximum major diameter of 14.000 by 0.024 (3 X 0.008) to 13.976. For the before coating minimum sizes, decrease the minimum pitch diameter of 12.601 by 0.032 (4 X 0.008) to 12.569 and the minimum major diameter of 13.720 by 0.016 (2 X 0.008) to 13.704. The before coating sizes should be included in the thread designation. (See para. 7.8.2.) 8.5.3 Adjusted Size Limits. It should be noted in the above examples that the before coating material limit tolerances are less than the tolerances after coating. This is because the coating tolerance consumes some of the product tolerance. In some instances there may be insufficient pitch diameter tolerance available in the before coating condition so that additional adjustments and controls will be necessary. 8.5.4 Strength. On small thread sizes (5 mm and smaller) there is a possibility that coating thickness adjustments will cause base material minimum material conditions which may significantly affect strength of externally threaded parts. Limitations on coating thickness or part redesign may be necessary. 8.6 Internal Threads Standard internal threads provide no allowance for coating thickness. To determine before coating limits for a uniformly coated thread, increase (u) minimum pitch diameter by 4 times maximum coating thickness, if specified, or by 6 times minimum 25 --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. METRIC SCREW THREADS: M PROFILE ASME B1.13M-2001 NOTE: If any tabulated values for allowance and tolerance are available, do not use formulas for calculation of these values. Calculate from formulas only when tabulated values do not exist. 8.8 Other Considerations It is essential to adequately review all possibilities and consider limitations in the threading and coating production processes before finalizing the coating process and the allowance required to accommodate the coating. A no allowance thread after coating shall not transgress the basic profile and is, therefore, subject to acceptance using a basic (tolerance position HA) size GO thread gage. Basic sizes for IS0 series threads appear in Nonmandatory Appendix D. 9.3 Formulas for Calculating Limiting Dimensions for M Profile Screw Threads 9.3.1 Internal Thread Min. major diam. = basic major diam. + EI (Table 13) Min. pitch diam. = basic major diam. - 0.6495191P (Table 2) + EI for Dz (Table 13) Max. pitch diam. = min. pitch diam. + TDz (Table 12) Max. major diam. = max. pitch diam. + 0.7938566P (Table 2) Min. minor diam. = min. major diam. - 1.0825318P (Table 2) Max. minor diam. = min. minor diam. + TD1(Table 9) 9 LIMITS OF SIZE 9.1 Standard Thread Series 9.3.2 External Thread Max. major diam. = basic major diam. - es (Table 13) [Note: es is absolute value] (a) The limiting M profile for internal threads is shown in Fig. 8 with the associated dimensions in Table 15. (b) The limiting M profiles for external threads are shown in Fig. 9 with the associated dimensions listed in Table 14. (c) For information, basic dimensions of all IS0 series metric screw threads, including the standard series, appear in Nonmandatory Appendix D. - Td (Table 10) = basic major diam. - 0.6495191P (Table 2) - es for dz (Table 13) = max. pitch diam. - Tdz (Table 11) Min. major diam. = max. major diam. Max. pitch diam. Min. pitch diam. Max. flat form minor diam. = max. pitch diam. - 0.4330127P (Table 2) Max. rounded form minor diam. = max. pitch diam. - 10SH + 2r min. 1 t I - arc cos 9.2 Determination of Size Limits - cos ( - &)]]] 1 (for 0.125P min. root radius) Min. rounded form minor diam. = min. pitch diam. - 0.6160254P (Table 2) (a) Values listed in Tables 14 and 15 shall be used to determine limits of size. (b) If required values are not listed in Tables 14 and 15, they shall be calculated using IS0 data in Tables 7,9, 10, 11, 12, and 13 and formulas in para. 9.3. r min. = 0.12%’ (Table 3) 9.4 Examples of Calculations of Size Limits (c) If required data is not included in any of the tables listed above, calculate the missing data from formulas given in section 6 and in para. 9.3. Round in accordance with ASME B1.30 which includes rounding rules and examples. (d) Examples in paras. 9.4.1 and 9.4.2, demonstrate the use of tabulated values of allowances and tolerances for calculating size limits for standard IS0 261 sizes (see Table 6). Examples in paras. 9.4.3 and 9.4.4, demonstrate the use of formulas for calculating values of allowances and tolerances for determining size limits for nonstandard thread sizes. Tables 16A through 16D show examples that are based upon the practices for calculating and rounding screw thread dimensions as specified in ASME B1.30. Dimensions are expressed in millimeters. 9.4.1 External Screw Thread, Standard Size. The following example in Table 16A shows how tabulated values for allowances and tolerances (in accordance with IS0 965-1) are used for the calculation of size limits in ASME B 1.13M tables for standard external thread sizes listed in IS0 261. See para. 9.4.3 for an example with a size not listed in IS0 261. 26 --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- Copyright ASME International Provided by IHS under license with ASME 60 deg. L Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. ASME B1.13M-2001 METRIC SCREW THREADS: M PROFILE --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- 27 Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. METRIC SCREW THREADS: M PROFILE ASME B1.13M-2001 w o o w m w (e?? 2SF C&;Q; e (.. zzz a m m c o r O 0 0 O 0 0 O 0 0 979 O 0 0 * * w m w m como O" m o m o m m m e - w o 7 ' 7 m r f - w o o o a m O 0 0 O 0 0 o w m 979 779 -0.3 . . . c c c **o m m w m m c oaa 3ss mmm dab mhiN e. : :. . c c c mmm * am m m mmm - c c hihl0 m m w kFk . . . c c c r - 7 c c c c e ? wwcv Na- m. m. m. I--- c c c ? ?? c e c c e - - e w w w CVNN 999 O 0 0 tc m E O m mw m w m a d m m mw m w mw a - m mco m w mw d m m w m w m w m d e m m w m w m w w m mwrn w m w $?Z d d I- " 2e2 III cvcvr " e " x x x x x x x x x u? 222 III - -- m m w m w mwrn c c c m m w m w mwrn ""u? c v - e x x x x x x f C Z HHI ssa O 0 0 28 Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- oocv ASME B1.13M-2001 O I- O 0 0 *ao TON O 0 0 --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- METRIC SCREW THREADS: M PROFILE m o w CFZ ò o ò d e m m o o .0e0. - N C U F I mcycu E Ela = cis I w m w &&ri m m m “N .E O“ u w w m m m e ~ m m moam m o u ggg O 0 0 maia UN^ NO omco g g g m8 m8 m8 mg gm gw wg mg mg m o m al V C U 2: 229, x x x m“ x x x ““m c r x x x hlhlm x x x 2“ x x x . .” --CV N r d wm-4 x x x x x x x x x 29 Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. METRIC SCREW THREADS: M PROFILE ASME B1.13M-2001 O 0 0 O 0 0 N b N C V b r b 9?9 999 b b d b m m r r m o o mmcr, mrz O 0 0 m o o r c c O 0 0 090 577 9 V T 777 m r r m m N m r a m m m 36% b b w N r r COCON O 0 0 .-?in. m b b 999 O 0 0 o m 0 <ob03 O 0 0 N O 0 r w o 7 F. r O 0 0 amcy N C V C V m m m g g g mg gm gm m m m 999 O 0 0 (0 b e"" .-mm N N r 7 r . - Lnmnhl "" N x x x x x x x x x x x x x x x 32% m a a x x x a m o %I% ZZ2 cO q0 g 0 $'" F P b u! o o w m&? m m&? m m a "! --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- m m o m m m 997 m r r b m b ""u? LD" r r < D W N x x x (o00 rs5 30 Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. ASME B1.13M-2001 METRIC SCREW THREADS: M PROFILE 0 0 7 r l - m O O N O 0 0 O 0 0 c TT-! 777 com7 r r o 0 0 "Oco "Oco O 0 0 O 0 0 N O 0 r m m 7-!7 O 0 0 mmm ""(0 cow4> O " N W " b b b m o o mcom Ococo comm 888 "088 " N N 2% x x x x x x lnmo m o o mmco O 0 0 O 0 0 999 999 m$m "m $$"m "u>$$"m comm mmm "$" "" 2% x x x x x x Nax x x O 0 0 oou) m o o h l N N x x x f T S !2SS H 3 S f f 31 --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. ACME B1.13M-2001 C O U u) al m n .- u) o al C m + Q al o m L al al c m .U L O .-C E m o m r F F òoo o m o m r m r - r oòò oaom r F F 000: o m m y - 77" O 0 0 o w 0 9m-t T " T O 0 0 9 0 0 o00 Y . " O O 0 0 ~ q 0 0 wm m w 7"7 u al .c .o al Q u) c. O C .-m .-c E ri x s ial c. como3 m m m 999 O 0 0 m m m m m m 999 O 0 0 oamm m m m mmco O 0 0 O 0 0 999 m m b 999 m m m w w 999 O 0 0 m m m mmoa 999 999 - w e O 0 0 e b b O 0 0 .E .E .- C : m C ..-E U O s u) C CUI e 3 6" c ä .. W I- NrJN NNN N N N N N m x x x x x x x x x x x x m o m x x x m m m x x x m m m x x x z 32 --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. ASME B1.13M-2001 METRIC SCREW THREADS: M PROFILE INTERNAL THREAD Minor Diam., Dl - LIMITING DIMENSIONS M PROFILE Pitch Diarn., 4and Functional Diam. [Note (111 Basic Thread Designation Tolerance Class M1.6 X 0.35 M2 X 0.4 M2.5 X 0.45 6H 6H 6H 1.221 1.567 2.013 1.321 1.679 2.138 1.373 1.740 2.208 M3 X 0.5 M3.5 X 0.6 M 4 X 0.7 6H 6H 6H 2.459 2.850 3.242 2.599 3.010 3.422 M5 x 0.8 M6 x 1 M8 X 1.25 6H 6H 6H 4.134 4.917 6.647 M8 x 1 M10 X 1.5 M10 x 1.25 6H 6H 6H M10 x l Major Diarn., D Max. [Note (211 [For Reference) TOI. Min 1.458 1.830 2.303 0.085 0.090 0.095 1.600 2.000 2.500 1.736 2.148 2.660 2.675 3.110 3.545 2.775 3.222 3.663 0.100 0.112 0.118 3.000 3.500 4.000 3.172 3.698 4.219 4.334 5.153 6.912 4.480 5.350 7.188 4.605 5.500 7.348 O. 125 0.150 0.160 5.000 6.000 8.000 5.240 6.294 8.340 6.917 8.376 8.647 7.153 8.676 8.912 7.350 9.026 9.188 7.500 9.206 9.348 0.150 0.180 0.160 8.000 10.000 10.000 8.294 10.397 10.340 6H 8.917 9.153 9.350 9.500 O. 150 10.000 10.294 M10 x 0.75 M12 x 1.75 M72 x 7.5 6H 6H 6H 9.188 10.106 10.376 9.378 10.441 10.676 9.513 10.863 11.026 9.645 11.216 0.132 0.200 0.190 10.000 11.O63 12.000 12.000 10.240 12.452 12.407 M12 x1.25 M12 x 1 M14 X 2 6H 6H 6H 10.647 10.917 11.835 10.912 11.153 12.210 11.188 11.350 12.701 11.368 o. 180 11.510 12.913 O. 160 0.212 12.000 12.000 14.000 12.360 12.304 14.501 Min. Max. Min. Max M14 X 1.5 6H 12.376 12.676 13.026 13.216 0.190 14.000 14.407 M15 X 1 6H 13.917 14.153 14.350 14.510 0.160 15.000 15.304 M16 X 2 M16 X 1.5 M17 x 1 6H 6H 6H 13.835 14.376 15.917 14.210 14.676 16.153 14.701 15.026 16.350 14.913 15.216 16.510 0.212 0.190 O. 160 16.000 16.000 17.000 16.501 16.407 17.304 M18 X 1.5 M20 x 2.5 M20 x 1.5 6H 6H 6H 16.376 17.294 18.376 16.676 17.744 18.676 17.026 18.376 19.026 17.216 18.600 19.216 0.190 0.224 0.190 18.000 20.000 20.000 18.407 20.585 20.407 M20 x 1 M22 x 2.5 M22 X 1.5 6H 6H 6H 18.917 19.294 20.376 19.153 19.744 20.676 19.350 20.376 21.026 19.510 20.600 21.216 0.160 0.224 0.190 20.000 22.000 22.000 20.304 22.585 22.407 3 2 1.5 6H 6H 6H 20.752 21.835 23.376 21.252 22.210 23.676 22.051 22.701 24.026 22.316 22.925 24.226 0.265 0.224 0.200 24.000 24.000 25.000 24.698 24.513 25.417 M27 X 3 M27 X 2 M30 x 3.5 6H 6H 6H 23.752 24.835 26.21 1 24.252 25.210 26.771 25.051 25.707 27.727 25.316 25.925 28.007 0.265 0.224 0.280 27.000 27.000 30.000 27.698 27.513 30.786 2 1.5 2 6H 6H 6H 27.835 28.376 30.835 28.210 28.676 31.210 28.701 29.026 31.701 28.925 29.226 31.925 0.224 0.200 0.224 30.000 30.000 33.000 30.513 30.417 33.513 6H 6H 6H 33.376 31.670 33.835 33.676 32.270 34.210 34.026 33.402 34.701 34.226 33.702 34.925 0.200 0.300 0.224 35.000 36.000 36.000 35.417 36.877 36.513 6H 6H 6H 36.835 38.376 37.129 37.210 38.676 37.799 37.701 39.026 39.077 37.925 39.226 39.392 0.224 0.200 0.315 39.000 40.000 42.000 . . 39.513 40.417 42.964 M24 M24 M25 M30 M30 M33 X X X X X X M35 x1.5 M36 X 4 M36 X 2 M39 M40 M42 X X X 2 1.5 4.5 (continued) Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- TABLE 15 METRIC SCREW THREADS: M PROFILE ASME B1.13M-2001 TABLE 15 ~~~~ ~ INTERNAL THREAD - LIMITING DIMENSIONS M PROFILE (CONT'D) ~ ~~ Minor Diam., Dl Basic ~ ~~~~~ Pitch Diam., 4and Functional Diam. [Note (111 Major Diam., D Min Max. [Note (211 (For Reference) 0.224 0.200 0.335 42.000 45.000 48.000 42.513 45.417 49.056 46.937 49.238 54.238 0.236 0.212 0.212 48.000 50.000 55.000 48.525 50.429 55.429 52.428 54.701 59.026 52.783 54.937 59.238 0.355 0.236 0.212 56.000 56.000 60.000 57.149 56.525 60.429 58.305 62.21 O 63.676 60.103 62.701 64.026 60.478 62.937 64.238 0.375 0.236 0.21 2 64.000 64.000 65.000 65.241 64.525 65.429 68.376 65.505 69.835 68.676 66.305 70.210 69.026 68.103 70.701 69.238 68.478 70.937 0.212 0.375 0.236 70.000 72.000 72.000 70.429 73.241 72.525 6H 6H 6H 73.376 73.505 77.835 73.676 74.305 78.210 74.026 76.103 78.701 74.238 76.478 78.937 0.212 0.375 0.236 75.000 80.000 80.000 75.429 81.241 80.525 M80 x 1.5 M85 x 2 M90 x 6 6H 6H 6H 78.376 82.835 83.505 78.676 83.210 84.305 79.026 83.701 86.103 79.238 83.937 86.478 0.212 0.236 0.375 80.000 85.000 90.000 80.429 85.525 91.241 M90 x 2 M95 x 2 M100 x 6 6H 6H 6H 87.835 92.835 93.505 88.210 93.210 94.305 88.701 93.701 96.103 88.937 93.951 96.503 0.236 0.250 0.400 90.000 95.000 100.000 90.525 95.539 101.266 M100 x 2 M105 X 2 M110 x 2 6H 6H 6H 97.835 102.835 107.835 98.210 103.21O 108.21O 98.701 103.701 108.701 98.951 103.951 108.951 0.250 0.250 0.250 100.000 105.000 110.000 100.539 105.539 110.539 M120 x 2 M130 X 2 M140 X 2 6H 6H 6H 117.835 127.835 137.835 118.210 128.210 138.210 118.701 128.701 138.701 118.951 128.951 138.951 0.250 0.250 0.250 120.000 130.000 140.000 120.539 130.539 140.539 M150 x 2 M160 X 3 M170 x 3 6H 6H 6H 147.835 156.752 166.752 148.210 157.252 167.252 148.701 158.051 168.051 148.951 158.351 168.351 0.250 0.300 0.300 150.000 160.000 170.000 150.539 160.733 170.733 M180 x 3 M190 x 3 M200 x 3 6H 6H 6H 176.752 186.752 196.752 177.252 187.252 197.252 178.051 188.051 198.051 178.351 188.386 198.386 0.300 0.335 0.335 180.000 190.000 200.000 180.733 190.768 200.768 Thread Designation Tolerance Class Min. Max. Min. Max TOI. M42 X 2 M45 x1.5 M48x5 6H 6H 6H 39.835 43.376 42.587 40.210 43.676 43.297 40.701 44.026 44.752 40.925 44.226 45.087 M48x2 M50 X 1.5 M55 x 1.5 6H 6H 6H 45.835 48.376 53.376 46.210 48.676 53.676 46.701 49.026 54.026 M56 x 5.5 M56 x 2 M60 X 1.5 6H 6H 6H 50.046 53.835 58.376 50.796 54.210 58.676 M64x6 M64x2 M65 X 1.5 6H 6H 6H 57.505 61.835 63.376 M70 X 1.5 M72 x 6 M72 x 2 6H 6H 6H M75 x1.5 M80 x 6 M80 x 2 GENERAL NOTE: All dimensions are in millimeters. NOTES: (1) See para. 5.4.2. (2) Dimension is used in the design of tools, etc. In dimensioning internal threads it is not normally specifed. Generally major diameter acceptance is based on maximum material condition gaging. --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- Copyright ASME International Provided by IHS under license with ASME 34 Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. ASME B1.13M-2001 METRIC SCREW THREADS: M PROFILE I D1 max. minor diam. I @ basic pitch diam. 1 I GENERAL NOTE: Section lined portions identify tolerance zone. NOTE: (1) Dimension is used in the desian of tools, etc. In dimensioning internal threads it is not normally specified. Generally major diameter acceptance is based upon a maximum material condition gaging. FIG. 8 INTERNAL THREAD - LIMITING M PROFILE, TOLERANCE POSITION H 9.4.2 Internal Metric Screw Thread, Standard Size. The example in Table 16B shows how tabulated values for allowances and tolerances (in accordance with IS0 965-1) are used for the calculation of size limits in ASME B1.13M tables for standard internal thread sizes listed in IS0 261. See para. 9.4.4 for an example with a size not listed in I S 0 261. accordance with IS0 965-1) are used for the calculation of size limits in ASME B1.13M tables for standard internal thread sizes listed in I S 0 261, see para. 9.4.2. 9.4.3 Metric External Screw Thread, NonStandard Size. The example in Table 16C shows how size limit calculations are made by use of formulas for sizes not listed in I S 0 261. For an example of how tabulated values for allowances and tolerances (in accordance with IS0 965-1) are used for the calculation of size limits in ASME B1.13M tables for standard external thread sizes listed in IS0 261, see para. 9.4.1. 10.1 Lead and Flank Angle Acceptance 10 LEAD AND FLANK ANGLE TOLERANCES Acceptance of lead and flankangles of product screw threads shall be in accordance with the following. These factors also contribute to visual identification of gross defects in thread profile. 10.1.1 When Thread Gaging System 21 of ASME B1.3 is specified, product thread lead (including helix) and flank angle variations are not considered. 9.4.4 Internal Metric Screw Thread, NonStandard Size. The example in Table 16D shows how size limit calculations are made by use of formulas for sizes not listed in I S 0 261. For an example of how tabulated values for allowances and tolerances (in 10.1.2 When Thread Gaging System 22 of ASME B1.3 is specified, with the pitch diameter or thread groove diameter inspection required, the product thread 35 Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- Dl basic minor diam. METRIC SCREW THREADS: M PROFILE ASME B1.13M-2001 d basic major diam. I d max. major diam. I d min. major diam. I I I --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- ?II I I d2 max. pitch diam. I Q basic pitch diam. GENERAL NOTE: Section lined portions identify tolerance zone and unshaded portions identify allowance (fundamental deviation). FIG. 9 EXTERNAL THREAD - LIMITING M THREAD PROFILE, TOLERANCE POSITION g B1.3) and the maximum material characteristic (GO in Tables 1 and 2, Col. A of ASME B1.3) must be accepted by the gages specified for System 23, over the standard GO thread gage length. Allowable variations in lead and flank angles are maximum values. Maximum variation in these and pitch diameter tolerance cannot be taken simultaneously. See paras. 10.1.5 and 10.1.6. lead (including helix) and flank angles shall be considered acceptable when the minimum material characteristic (pitch diameter or thread groove diameter in Tables 1 and 2, Cols. C and D of ASME B1.3) and the maximum material characteristic (Goin Tables 1 and 2, Col. A of ASME B1.3) are accepted by the gages specified for System 22, over the standard GO thread gage length. When thread gaging system 22 is specified with NOTGO (LO) functional diameter combined with control of lead and flank option, agreements must be reached between the purchaser and the supplier on lead and flank angle limits and method of evaluation. 10.1.4 When individual inspections of lead (including helix) and flank angle variations are required, in addition to thread gaging System 21 or 22 of ASME B1.3, the allowable variations for these characteristics shall be specified. 10.1.3 When Thread Gaging System 23 of ASME B1.3 is specified, product thread lead and flank angles shall be acceptable if within the allowable variations as specified in Tables 17 and 18. Also, the minimum material characteristic (pitch diameter or thread groove diameter in Tables 1 and 2, Cols. C and D of ASME 10.1.5 For sizes not included in Tables 17 and 18, the allowable lead variation is equal to 0.57735 times one-half the pitch diameter tolerance. This is the lead variation which causes a change in functional diameter equal to one-half the pitch diameter tolerance. 36 Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. ASME B1.13M-2001 METRIC SCREW THREADS: M PROFILE 1O. 1.6 For requirements of paras. 1O. 1.4 and 1O. 1.5, lead variation values tabulated or calculated are the maximum variations from specified lead between any two points not farther apart than the length of the standard GO thread gage. (See ASME B47.1.) Flank angle variation values are maximum variations from the basic 30 deg angle between thread flanks and perpendiculars to the thread axis. --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- The allowable flank half-angle variation in minutes of arc is equal to 125 divided by the square root of pitch for pitch diameter tolerance grade 6 and 80 divided by the square root of pitch for pitch diameter tolerance grade 4. For other standard tolerance grades, mdtiply allowable angle variations for tolerance grade 6 by the multipliers in para. 6.6.1.1. Round calculated angle variations to the nearest 5 min. 37 Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. ASME B1.13M-2001 METRIC SCREW THREADS: M PROFILE --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- u) 0 al -mn U h t C U a C ¿ Q b U C a a U z 3U a c: v: - 6 5 c w 8w s a w s r 3 m a c 38 Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. METRIC SCREW THREADS: M PROFILE ASME B1.13M-2001 w -ua N n a Pz a k ci wa I l- 3 W a U VI ua 5; --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- z -a : U t L U C Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. METRIC SCREW THREADS: M PROFILE ASME B 1.I 3M-2001 --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- Lo .- I- 9 c r c z N II II Lo N 8 .- a o I I a In O C I- e E ? II II II III! 2 c II .-!i X !ì E -c -0 40 Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. ASME B1.13M-2001 METRIC SCREW THREADS: M PROFILE C h c h c I 3 t C i C # F ! P I ll I ! cà C C I 7 I I i ‘t : --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. ASME B1.13M-2001 METRIC SCREW THREADS: M PROFILE B 3 .c * C O P W N vj n a P2 2 z O z ri Ya h U u: I h 3 W I- .- l- II d a 2 o x F 2 a F lü C -I m 5II m N a iñ ¿! m U L a f 2 U d n II Il II Il Il r II > 2 d --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- v) W -z ö W 4 3a Y r Lu 4 m s Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. ASME B1.13M-2001 METRIC SCREW THREADS: M PROFILE --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- d x 9 c II eo c Zi w cv z c II x E a 43 Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. METRIC SCREW THREADS: M PROFILE ASME B1.13M-2001 I TABLE 17 ALLOWABLE VARIATIONS IN LEAD AND EQUIVALENT CHANGE IN FUNCTIONAL DIAMETER I GENERAL NOTE: See paras. 10.1.3 through 10.1.6 for applicability. External Threads M1.6 0.35 X M2 x0.4 M2.5 x 0.45 M3 0.5 X M3.5 x 0.6 M 4 x 0.7 M5 X 0.8 M6 X 1 M8 X 1.25 M8 X 1 M10 X 1.5 M10 X 1.25 M10 x 1 M10 X 0.75 M12 X 1.75 MI2 X 1.5 M12 X 1.25 M12 x 1 Tolerance Class 6g 4969 69 4969 69 4969 69 4969 69 4969 69 4969 6g 4969 69 4969 69 4969 69 4969 69 4969 69 4969 69 4969 69 4969 69 4969 69 4969 6g 4969 69 49% M14 X 2 M14 X 1.5 M15 X 1 M16 X 2 M16 x1.5 M17 X 1 69 4969 69 4969 69 4969 69 4969 69 4969 69 4969 Allowable Variation in Lead Equivalent Change in Functional Diameter (tl (+I 0.018 0.012 0.019 0.012 0.020 0.013 0.022 0.014 0.025 0.015 0.026 0.016 0.027 0.017 0.032 0.020 0.034 0.022 0.032 0.020 0.038 0.025 0.034 0.022 0.032 0.020 0.029 0.019 0.032 0.020 0.034 0.021 0.036 0.022 0.038 0.024 0.042 0.026 0.045 0.028 0.048 0.030 0.056 0.036 0.059 0.038 0.056 0.036 0.066 0.042 0.059 0.038 0.056 0.036 0.050 0.032 0.075 0.048 0.070 0.045 0.066 0.042 0.059 0.038 0.080 0.050 0.070 0.045 0.059 0.038 0.080 0.050 0.070 0.045 0.059 0.038 0.043 0.027 0.040 0.026 0.038 0.025 0.034 0.022 0.046 0.029 0.040 0.026 0.034 0.022 0.046 0.029 0.040 0.026 0.034 0.022 Allowable Variation in Lead Equivalent Change in Functional Diameter (=I (-1 6H 0.025 0.042 6H 0.026 0.045 6H 0.027 0.048 6H 0.029 0.050 6H 0.032 0.056 6H 0.034 ... ... 0.059 6H 0.036 0.062 6H 0.043 0.075 6H 0.046 0.080 6H 0.043 0.075 6H 0.052 0.090 6H 0.046 0.080 6H 0.043 0.075 6H 0.038 0.066 6H 0.058 0.100 6H 0.055 0.095 6H 0.052 0.090 6H 0.055 0.080 6H 0.061 0.106 6H 0.055 0.095 6H ... 6H ... 0.055 0.080 0.061 0.106 6H 0.055 0.095 6H 0.046 0.080 Tolerance Class ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- Basic Thread Designation , Internal Threads ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... Icon tin uedl 44 Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. ASME B1.13M-2001 METRIC SCREW THREADS: M PROFILE TABLE 17 ALLOWABLE VARIATIONS IN LEAD AND EQUIVALENT CHANGE IN FUNCTIONAL DIAMETER (CONT'D) GENERAL NOTE: See paras. 10.1.3 through 10.1.6 for applicability. External Threads Basic Thread Designation MI8 X 1.5 M20 x 2.5 M20 x 1.5 M20 x 1 M22 x 2.5 M22 x1.5 M24 X 3 M24 x 2 M25 xl.5 M27 X 3 M27 x 2 M30 x 3.5 M30 x 2 M30 x 1.5 M33 x 2 M35 x 1.5 M36 x 4 M36 x 2 M39 x 2 M40 X 1.5 M42 x 4.5 M42 X 2 M45 x 1.5 M48x5 M48x2 M50 x 1.5 Tolerance Class Allowable Variation in Leàd (2) 0.040 0.026 0.049 0.031 0.040 0.026 0.034 0.022 0.049 0.040 0.026 0.058 0.036 0.049 0.031 0.043 0.025 0.058 0.049 0.031 0.061 0.038 0.049 0.031 0.043 0.025 0.049 0.031 0.043 0.065 0.040 0.049 0.031 0.049 0.031 0.043 0.025 0.068 0.043 0.049 0.031 0.043 0.025 0.072 0.046 0.052 0.032 0.046 0.029 Internal Threads Equivalent Change in Functional Diameter (+I 0.070 0.045 0.085 0.053 0.070 0.045 0.059 0.038 0.085 0.070 0.045 0.100 0.062 0.085 0.053 0.075 0.042 0.100 0.085 0.053 0.106 0.066 0.085 0.053 0.075 0.042 0.085 0.053 0.075 0.112 0.070 0.085 0.053 0.085 0.053 0.075 0.042 0.118 0.075 0.085 0.053 0.075 0.042 O. 125 0.080 0.090 0.056 0.080 0.050 Tolerance Class 6H Allowable Variation in Lead Equivalent Change in Functional Diameter It) I-) 0.055 0.095 ... ... 6H 0.065 0.1 12 6H 0.055 0.095 6H 0.046 0.080 6H 6H 0.065 0.055 0.112 0.095 6H 0.076 0.132 6H 0.065 0.1 12 6H 0.058 0.100 6H 6H 0.076 0.065 0.132 0.1 12 6H 0.081 0.140 6H 0.065 0.112 6H 0.058 0.100 6H 0.065 0.112 6H 6H 0.058 0.087 0.100 0.150 6H 0.065 0.112 6H 0.065 0.112 6H 0.058 0.100 6H 0.091 0.158 6H 0.065 0.112 6H 0.058 0.100 6H 0.097 0.168 6H 0.068 0.118 6H 0.061 0.106 ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... (continued) --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. METRIC SCREW THREADS: M PROFILE ACME B1.13M-2001 TABLE 17 ALLOWABLE VARIATIONS IN LEAD AND EQUIVALENT CHANGE IN FUNCTIONAL DIAMETER (CONT'D) GENERAL NOTE: See paras. 10.1.3 through 10.1.6 for applicability. External Threads Basic Thread Designation M55 X 1.5 M56 X 5.5 M56 x 2 M60 X 1.5 M64x6 M64x2 M65 X 1.5 M70 X 1.5 M72 X 6 NI72 X 2 M75 X 1.5 M80 X 6 M80 X 2 M80 X 1.5 M85 X 2 M90 x 6 M90 x 2 M95 x 2 M100 x 6 M100 x 2 M105 X 2 M110 x 2 M120 x 2 M130 X 2 Tolerance Class 6g 4969 69 4969 69 4969 69 4969 69 4969 69 4969 69 4969 69 4969 69 4969 69 4969 69 4969 69 4969 69 4969 69 4969 69 4969 69 4969 69 4969 ss 4969 69 4969 69 4969 69 4969 69 4969 69 4969 69 4969 Internal Threads Allowable Variation in Lead Equivalent Change in Functional Diameter (LI (+I 0.046 0.029 0.076 0.049 0.052 0.032 0.046 0.029 0.081 0.052 0.052 0.032 0.046 0.029 0.046 0.029 0.081 0.052 0.052 0.032 0.046 0.029 0.081 0.052 0.052 0.032 0.046 0.029 0.052 0.032 0.081 0.052 0.052 0.032 0.055 0.034 0.087 0.055 0.055 0.080 0.050 0.132 0.085 0.090 0.056 0.080 0.050 0.140 0.090 0.090 0.056 0.080 0.050 0.080 0.050 0.140 0.090 0.090 0.056 0.080 0.050 0.140 0.090 0.090 0.056 0.080 0.050 0.090 0.056 0.140 0.090 0.090 0.056 0.095 0.059 0.150 0.095 0.095 0.059 0.095 0.059 0.095 0.059 0.095 0.059 0.095 0.059 0.034 0.055 0.034 0.055 0.034 O. 055 0.034 0.055 0.034 Tolerance Class Allowable Variation in Lead Equivalent Change in Functional Diameter (-1 (i) 0.061 ... O. 106 ... 6H 0.102 0.178 6H 0.068 0.118 6H 0.061 0.106 6H 0.108 0.188 6H 0.068 0.1 18 6H 0.061 0.106 6H 0.061 0.106 6H 0.108 0.188 6H 0.068 0.118 6H 0.061 O. 106 6H 0.108 O. 188 6H 0.068 0.118 6H 0.061 0.106 6H 0.068 0.118 6H 0.108 0.188 6H 0.068 0.118 6H 0.072 0.125 6H ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 0.115 ... 6H 0.072 O. 125 6H 0.072 0.125 6H 0.072 O. 125 0.072 0.125 ... ... 6H ... ... ... 6H ... 6H ... ... ... ... ... 0.072 ... ... ... ... 0.200 ... ... ... ... 0.125 ... ~ (continued) --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- Copyright ASME International Provided by IHS under license with ASME 46 Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. ASME B1.13M-2001 METRIC SCREW THREADS: M PROFILE TABLE 17 ALLOWABLE VARIATIONS IN LEAD AND EQUIVALENT CHANGE IN FUNCTIONAL DIAMETER (CONT'D) GENERAL NOTE: See paras. 10.1.3 through 10.1.6 for applicability. External Threads Basic Thread Designation M140 x 2 MI50 x 2 MI60 x 3 M170 x 3 M180 x 3 MI90 x 3 M200 x 3 Tolerance Class 69 4969 69 4969 ss 4969 69 4969 69 4g69 69 4969 69 4969 Internal Threads Allowable Variation in Lead Equivalent Change in Functional Diameter (+I (+I 0.055 0.034 0.055 0.034 0.065 0.040 0.065 0.040 0.065 0.040 0.072 0.046 0.072 0.046 0.095 0.059 0.095 0.059 0.112 0.070 0.112 0.070 0.112 0.070 0.125 0.080 0.125 0.080 Tolerance Class Allowable Variation in Lead (:I 0.072 O. 125 6H 0.072 0.125 6H 0.087 0.150 6H 0.087 0.150 6H 0.087 0.150 6H 0.097 0.168 6H 0.097 0.168 ... ... ... ... ... ... ... ... ... ... ... ... ... --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- TABLE 18 .ALLOWABLE VARIATIONS IN 30 deg BASIC HALF-ANGLE OF SCREW THREADS External and Internal Threads Allowable Variation in Half-Ande ~~ Pitch 0.35 0.4 0.45 0.5 0.6 0.7 0.75 0.8 1 1.25 1.5 1.75 2 2.5 3 3.5 4 4.5 5 5.5 6 8 Pitch Diam. TOI. Grade 4 r Deg Min r Deg Min 3 3 3 2 2 2 2 2 2 1 1 1 1 1 1 1 1 30 20 05 55 40 30 25 20 05 50 40 35 30 20 10 05 05 2 2 2 1 1 1 1 1 1 1 1 1 15 05 O O O O 1 O O O O O0 55 50 45 45 40 40 35 35 35 30 O O O 55 55 50 45 O O O O0 55 45 35 30 30 20 10 05 O0 GENERAL NOTE: See paras. 10.1.3 t h r o u g h 10.1.6 for applicability. 47 Copyright ASME International Provided by IHS under license with ASME (4 6H ... GENERAL NOTE: All dimensions are in millimeters. Pitch Diam. TOI. Grade 6 Equivalent Change in Functional Diameter Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. ... ... ... ... ... ... ... ASME B1.13M-2001 NONMANDATORY APPENDIX A STANDARD RULES FOR ROUNDING --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- See ASME B1.30 for rounding rules and examples. 49 Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. ASME B1.13M-2001 NONMANDATORY APPENDIX B THREAD STRENGTH DESIGN FORMULAS where AS, = minimum thread shear area for internal threads, mm2 AS, = minimum thread shear area for external threads, mm2 LE = length of engagement B1 THREAD TENSILE STRESS AREA The following tensile stress area formula is used for the purpose of product acceptance computations per IS0 898/1. This formula is based upon the area at a section midway between the basic pitch diameter and the basic rounded form minor diameter with radius of 0.144P. B3 LENGTH OF THREAD ENGAGEMENT Tensile stress Area, mm2 In general the length of engagement of mating threads is selected to utilize full tensile strength of a bolt prior to shearing of nut threads. Other applications may require internai thread shear prior to failure of the externally threaded part. For non-critical design, the following formulas are often used for approximation: A, = 0.7854 (dbsc - 0.9382P)2 B2 THREAD SHEAR AREA The following formulas for thread shear areas are geometric minimum values. Shear Vhread Stripping) strength of screw threads under load are dependent, in addition, o n mating component relative material strengths, nut geometry, and coefficient of friction between thread bearing surfaces. Effective shear areas are therefore somewhat less than the geometric values. Tensile strength of externally threaded part, kN Shear strength of threads, kN = S,(AS, or ASs)/2000 Thread Geometric Shear Areas: AS,, = where 3.1416 p LE d min. S, = Ultimate tensile strength of material, MPa + 0.57735( d min. - Dz max.) --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- An internationally accepted study on the subject has been published in the 1977 Transactions of the Society of Automotive Engineers as Paper number 770420. Analysis and Design of Threaded Assemblies by E. M. Alexander. P AS, = 3’1416 LE Dl max. [g + 0.57735 (d2 min. - Dl max. 11 50 Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. ASME B1.13M-2001 NONMANDATORY APPENDIX C LIMITING DIMENSIONS M PROFILE SCREW THREADS INCH TRANSLATION - --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- This Appendix presents an inch translation of limiting dimensions for M profile screw threads appearing in Tables 14 and 15. Data appearing here are for reference only. 51 Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. ASME B1.13M-2001 NONMANDATORY APPENDIX C -fim w r r O N N m m m 999 999 m m o m m m m m m O 0 0 809 òo'ò r r a m m m - r N g z z N O 0 òòò O 0 0 ;Es . . . O 0 0 O 0 0 afio - m m fifi0 77" meum a f i m ofifi O 0 0 mmb e m m m m fib0 - w u NNN O 0 0 r m m w m m m - r o m m NNN 0 0 - c c - 0 0 - ò ò ò 999 77. O 0 0 . . . ò o ò 7NN O 0 0 W O N ò o o m w w O 0 0 999 òòò w e b O 0 0 o o m m m N 7 7 . O 0 0 r m m m m m N O 0 N'?"! O 0 0 O 0 0 7 - 0 o w w mmcu N m m % % % %C$! òòò 00'0: O 0 0 .7N N T 0 m m m mfifi b b N N O 0 999 999 999 999 O 0 0 & Gg g gg ggc : :2 O 0 0 O 0 0 O 0 0 O O 0 0 O 0 0 O 0 0 090? 0 0 O 0 0 m m "N 00- r - r x x x m m w wcom x x x x x x x x x HEZ EEZ 52 --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. ASME B1.13M-2001 NONMANDATORY APPENDIX C rm m m o w w r m o o N w m m m w m m d ggzg m o o m m m m m m ggg mr-r- 999 8 Ô 0 0 l-(ow Gm Zm mZ O 0 0 a 28 m m m m m m 999 O 0 0 Bm w e r w r m m m O O N m m m m o c?c?c?Y m 2 0 0 0 O 0 0 0 000 m m w d 2 Lo w d O 8 m N m Lo --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- 2 d m 0 w 2 fN mmr? mmr? N d b w w w CO 2 --??Y O 0 0 m m m m d N N 244 080'0' $32 2 N O N N N O 0 NaCo 999 O 0 0 zO z0 z0 r o o r r c O O 0 0 8 999 O 0 0 m $%)(o" Q u> ?Lo.Lo.-! m m -! Lo. r N N F x x x x x x x x x x NNNN N N N 444 HIP y r r r r r r c ZHPH r c 555 00'0' O 0 0 m o i mw g m mw m w mw "Lo. sxy w m a m w d Q r Lo." c c r r e - - X x x x x x x x x x k?? HHH O 0 0 r H 50s: PPH 55s 53 Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. ASME B1.13M-2001 NONMANDATORY APPENDIX C 006 w w w d d w + fim mml- m m m b m m m m m com+ 7 7 4 O 0 0 b o o 999 O 0 0 b b 0 b b m 999 O 0 0 e O 2 d U 000 . . . ~. Oô0 r r - O er & B +Q>b m w r b w w O 0 0 O 0 0 000 n Y o 0 0 er I I- w o o w m m $ $.14.:. m r r 2 r r r E I- w w o o w m m ~. 000 t Lu -I cn ul u l w < o w o) w m o) caco . . . 9 99 r c r . . . v e r r . . . c r o) o) o)w < o w o) o) w o w w cr a I" "4i nr r r x x x ,"" m(U, . c r x x x x x x "in mmh( x x x "u! " h l r r h l w r x x x x x x 54 --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- Copyright ASME International Provided by IHS under license with ASME .s c C O 2 z W 3 Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. ACME B1.13M-2001 NONMANDATORY APPENDIX C F F P r o o 800 O 0 0 22% rnrnm 99' O 0 0 ~~ o 0 0 F F r n a " OCUN m a w rnmm O 0 0 O 0 0 b b w P F O m a m w w w warn o o m m m w ggg 9"" 999 aas 3 c c 2 O F N r n r m w m m mmr- oohl tititi w m m m o o mmm P I O 0 9 '. r r r E --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- 5 C I wrnrn O 0 0 rhlhl rnrnrn w w w O 0 0 wrnm 888 999 ZO 30 %0 mrnrn a r c O 0 0 r o m p g O 0 0 O 0 0 2 m 8 b m a $ rn "'o r r m x x x rnNN ""u! r e - $U?Z x x x x x x x x x oorn rnww rnrna 223 222 5152 ui x x x 2 w a x x x (0-0 O b b Nhle rnrnw (Daw 111 111 55 Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. ASME B1.13M-2001 NONMANDATORY APPENDIX C w w w - 0 0 m m m mmrn 999 O 0 0 3 e w w O 0 0 w m m PImm 999 O 0 0 .E: c O 0 0 C O P NhjN O 0 0 -00 --- zO g0 % 0 O 0 0 000 N Q > 999 ~ -0-3 O 0 0 w o w m - o cumw m o o g!! P I O 0 m o o a o 0 m r r o r r FiFiFi m w w E O 0 0 s . . . Fic-4Fi w m m m m m r r r a B o00 m m o r r m gss O 0 0 m(0" o> x x x N N N f%% m m r r r m O 0 0 999 O00 o) o)* o o m $22 w m 3 * w 9 6 l o w w O 0 0 O 0 0 o)= P $ "u! O 0 0 cn3 o) $" < O W N N r r x x x "w (ONN x x x O 0 0 w m m x x x x x x O 0 0 m m m ggg TEE ESE m o o m m m r r O 0 0 O 0 0 000 m rwnm o m Ias ZIT w N N x x x 0 0 0 O 0 0 r r r I52 56 Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- o w w m N N 00'0' O 0 0 ASME B1.13M-2001 NONMANDATORY APPENDIX C E I (o al c U o00 m m m e-.- o00 m m m 7 - F O 0 0 O 0 0 O 0 0 O 0 0 999 999 00 o00 o m m r.n-mcmc m .--- m m m 999 999 O 0 0 O 0 0 O 0 0 O 0 0 coam - 7 - O 0 0 999 O 0 0 m m m m mco 7 - 7 m m m cocoa r e y O 0 0 O 0 0 999 999 O 0 0 O 0 0 I ? I ' 1 .-C .-C al Li m u) C .-O u) C al "m9$ m " $m$ $"$ "mg$ m " $m$ m$m $"ga "$" $m g * g "m$ * $en$ E ü - ä .. 2 O z N N N N N N N N C V N N N m o m mmm mmm x x x x x x x x x x x x x x x x x x x x x --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- Copyright ASME International Provided by IHS under license with ASME 57 Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. NONMANDATORY APPENDIX C ASME Bl.13M-2001 Minor Diam., Dl - LIMITING DIMENSIONS M PROFILE Pitch Diam., 4and Functional Diam. [Note (111 Major Diam., R Nominal Pitch, Basic Thread Designation Tolerance Class Min. Max. Min. Max. TOI. Min. Max. [Note (211 (Reference) M1.6 X 0.35 M2 x 0.4 M2.5 X 0.45 6H 6H 6H 0.04807 0.06169 0.07925 0.05201 0.06610 0.08417 0.05406 0.06850 0.08693 0.05740 0.07205 0.09067 0.00334 0.00355 0.00374 0.06299 0.07874 0.09843 0.06835 0.08457 O. 10472 0.01378 0.01575 0.01772 M3 X 0.5 M3.5 X 0.6 M 4 x 0.7 6H 6H 6H 0.09681 0.11220 O. 12764 O. 10232 0.11850 0.13472 O. 10531 0.12244 O. 13957 0.10925 0.12685 0.14421 0.00394 0.00441 0.00464 0.1 1811 o.wao O. 15748 O. 12488 O. 14559 0.16610 0.01969 0.02362 0.02756 M5 X 0.8 M6 x 1 M8 x 1.25 6H 6H 6H O. 16276 O. 19358 0.26169 0.17063 0.20287 0.27213 O. 17638 0.21063 0.28299 0.18130 0.21654 0.28929 0.00492 0.00591 0.00630 O. 19685 0.23622 0.31496 0.20630 0.24780 0.32835 0.03150 0.03937 O .O492 1 M8 x 1 M10 x 1.5 M10 x 1.25 6H 6H 6H 0.27232 0.32976 0.34043 0.28161 0.34157 0.35087 0.28937 0.35535 0.36173 0.29528 0.36244 0.36803 0.00591 0.00709 0.00630 0.31496 0.39370 0.39370 0.32654 0.40933 0.40709 0.03937 0.05906 0.04921 M10 x 1 M10 X 0.75 M12 x 1.75 6H 6H 6H 0.351 06 0.36173 0.39787 0.36035 0.36921 0.41106 0.3681 1 O. 374 53 0.42768 0.37402 0.37972 0.43555 0.00591 0.00519 0.00787 0.39370 0.39370 0.47244 0.40528 0.403 15 0.49024 0.03937 0.02953 0.06890 M12 x 1.5 M12 x 1.25 M12 x 1 6H 6H 6H 0.40850 0.41917 0.42980 0.42031 0.42961 0.43909 0.43409 0.44047 0.44685 0.44157 0.44756 0.45315 0.00748 0.00709 0.00630 0.47244 0.47244 0.47244 0.48846 0.48661 0.48441 0.05906 0.049 21 0.03937 M14 x 2 M14 x 1.5 M15 x 1 6H 6H 6H 0.46594 0.48724 0.54791 0.48071 0.49906 0.50839 0.52031 0.57 126 0.00835 0.00748 0.00630 0.55118 0.551 18 0.59055 0.57091 0.56720 0.60252 0.07874 0.05906 0.55120 0.50004 0.51283 0.56496 M16 x 2 M16 X 1.5 M17 X 1 6H 6H 6H 0.54469 0.56598 0.61886 0.55945 0.57780 0.63594 0.57878 0.59157 0.64370 0.58713 0.59906 0.65000 0.00835 0.00749 0.00630 0.62992 0.62992 0.66929 0.64965 0.64594 0.68 126 0.07874 0.05906 0.03937 M18 X 1.5 M20 x 2.5 M20 x 1.5 6H 6H 6H 0.64472 0.68087 0.72346 0.65654 0.69858 0.73528 0.67031 0.72346 0.74906 0.67780 0.73228 0.75654 0.00749 0.00882 0.00748 0.70866 0.78740 0.78740 0.72469 0.81043 0.80343 O. O59O6 0.09843 0.05906 M20 x 1 M22 x 2.5 M22 x 1.5 6H 6H 6H 0.74476 0.75961 0.80220 0.75406 0.77732 0.81402 0.76181 0.80220 0.82780 0.7681 1 0.81 102 0.83528 0.00630 0.00882 0.00748 0.78740 0.86614 0.86614 0.79937 0.88917 0.88217 0.03937 0.09843 0.05906 M24 x 3 M24 x 2 M25 X 1.5 6H 6H 6H 0.81701 0.85965 0.92031 0.83669 0.87441 0.93213 0.86815 0.89374 0.94591 0.87858 0.90256 0.95378 0.01043 0.00882 0.00787 0.94488 0.94488 0.98425 0.97236 0.96508 1.O0067 0.1 1811 0.07874 0.05906 M27 X 3 M27 x 2 M30 X 3.5 6H 6H 6H 0.93512 0.97776 1.03193 0.95480 0.99252 1.O5398 0.98626 1.01185 1.09161 0.99669 1.02067 1.10264 0.01043 0.00882 0.01 103 1.O6299 1.06299 1.18110 1.O9047 1.O8319 1.21205 0.11811 0.07874 0.13780 M30 x 2 M30 X 1.5 M33 x 2 6H 6H 6H 1.09587 1.11717 1.21398 1.11063 1.12898 1.22874 1.12996 1.14276 1.24807 1.13878 1.15063 1.25689 0.00882 0.00787 0.00882 1.18110 1.18110 1.29921 1.20130 1.19752 1.31941 0.07874 0.05906 0.07874 M35 x 1.5 M36 X 4 M36 x 2 6H 6H 6H 1.31402 1.24685 1.33209 1.32559 1.27047 1.34685 1.33961 1.31504 1.36618 1.34748 1.32685 1.37500 0.00787 0.01 181 0.00882 1.37795 1.41732 1.41732 1.39437 1.45185 1.e752 0.05906 0.15748 0.07874 M39 x 2 M40 X 1.5 M42 x 4.5 6H 6H 6H 1.45020 1.5 1087 1.46177 1.46496 1.52268 1.48815 1.48429 1.53646 1.53846 1.49311 1.54433 1.55087 0.00882 0.00787 0.01241 1.53543 1.57480 1.65354 1.55563 1.59122 1.69150 0.07874 0.05906 0.17717 P 0.03937 ícontinved) 58 Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- TABLE C2 INCH TRANSLATION FOR INTERNAL THREAD ASME B1.13M-2001 NONMANDATORY APPENDIX C TABLE C2 INCH TRANSLATION FOR INTERNAL THREAD (CONT'DI Basic Thread Designation Minor Diam., Dl - LIMITING DIMENSIONS M Pitch Diam., 4and Functional Diam. [Note (111 PROFILE Major Diam., D Min. Max. Min. Max. TOI. Min. M42 X 2 M45 X 1.5 M48x5 6H 6H 6H 7.5683 7 1.70772 1.67665 1.58307 1.71953 1.70461 1.60240 1.73331 1.76189 1.61122 1.74118 1.77508 0.00882 0.00787 0.01319 1.65354 1.77165 1.88976 1.67374 1.78807 1.93134 0.07874 0.05906 0.19685 M48 X 2 M50 X 1.5 M55 X 1.5 6H 6H 6H 1.80453 1.go457 2.10142 1.81929 1.91638 2.11323 1.83862 1.93016 2.12701 1.84791 1.93850 2.13535 0.,00929 0.00834 0.00834 1.88976 1.96850 2.16535 1.91043 1.98539 2.18224 0.07874 0.05906 0.05906 M56 X 5.5 M56 X 2 M60 X 1.5 6H 6H 6H 1.97031 2.11949 2.29827 1.99984 2.13425 2.31008 2.06409 2.15358 2.32386 2.07807 2.16287 2.33220 0.01398 0.00929 0.00834 2.20472 2.20472 2.36220 2.24996 2.22539 2.37909 0.21654 0.07874 0.05906 M64 X 6 M64x2 M65 x 1.5 6H 6H 6H 2.26398 2.43445 2.49512 2.29547 2.44921 2.50693 2.36626 2.46854 2.52071 2.38102 2.47783 2.52906 0.01476 0.00929 0.00835 2.51969 2.51969 2.55906 2.56854 2.54035 2.57594 0.23622 0.07874 0.05906 M70 X 1.5 M72 x 6 M72 x 2 6H 6H 6H 2.69197 2.57894 2.74941 2.70378 2.61043 2.76417 2.71756 2.68122 2.78350 2.72591 2.69598 2.79280 0.00835 0.01476 0.00930 2.75591 2.83465 2.83465 2.77280 2.88350 2.85531 0.05906 0.23622 0.07874 M75 x 1.5 M80 x 6 M80 x 2 6H 6H 6H 2.88882 2.89390 3.06437 2.90063 2.92539 3.079 13 2.91441 2.99618 3.09846 2.92276 3.01 094 3.10776 0.00835 0.01476 0.00930 2.95276 3.14961 3.14961 2.96965 3.19846 3.17028 0.05906 0.23622 0.07874 M80 x 1.5 M85 x 2 M9U x 6 6H 6H 6H 3.08567 3.26122 3.28760 3.09748 3.27598 3.3 1909 3.1 1126 3.29531 3.38988 3.11961 3.30461 3.40465 0.00835 0.00930 0.01 477 3.14961 3.34646 3.54331 3.1 6650 3.367 13 3.59217 0.05906 0.07874 0.23622 M90 x 2 M95 x 2 M100 x 6 6H 6H 6H 3.45807 3.65492 3.68130 3.47283 3.66969 3.7 1280 3.49217 3.68902 3.78358 3.50146 3.69886 3.79933 0.00929 0.00984 0.01575 3.54331 3.74016 3.93701 3.56398 3.76138 3.98685 0.07874 0.07874 0.23622 M100 x 2 M105 X 2 M110 x 2 6H 6H 6H 3.85177 4.04862 4.24547 3.86654 4.06339 4.26024 3.88587 4.08272 4.27957 3.89571 4.09256 4.28941 0.00984 0.00984 0.00984 3.93701 4.13386 4.3307 1 3.95823 4.15508 4.35193 0.07874 0.07874 0.07874 M120 x 2 M130 X 2 M140 X 2 6H 6H 6H 4.63917 5.03287 5.42657 4.65394 5.04764 5.44134 4.67327 5.06697 5.46067 4.6831 1 5.07681 5.47051 0.00984 0.00984 0.00984 4.72441 5.11811 5.51181 4.74563 5.13933 5.53303 0.07874 0.07874 0.07874 M150 X 2 M160 X 3 M170 X 3 6H 6H 6H 5.82028 6.17 134 6.56504 5.83504 6.191 02 6.58472 5.85437 6.22248 6.61618 5.86421 6.23429 6.62799 0.00984 0.01181 0.01 181 5.90551 6.29921 6.69291 5.92673 6.32807 6.72177 0.07874 0.11811 0.11811 M180 X 3 M190 x 3 M200 x 3 6H 6H 6H 6.95874 7.35244 7.74614 6.97843 7.37213 7.76583 7.00988 7.40358 7.79728 7.02169 7.41677 7.81047 0.01181 0.01319 0.01319 7.08661 7.48031 7.87402 7.11547 7.51055 7.90425 O. 11811 0.1 1811 0.11811 - Max. [Note (211 (Reference) Nominal Pitch, Tolerance Class P GENERAL NOTE All dimensions are in inches. NOTES: (1) See para. 5.4.2. (2) Dimension is used in the design of tools, etc. In dimensioning internal threads it is not normally specified. Generally, major diameter acceptance is based on maximum material condition gaging. 59 --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. ASME B1.13M-2001 NONMANDATORY APPENDIX D BASIC DIMENSIONS FOR IS0 SERIES METRIC SCREW THREADS FROM IS0 724 ~- Nom. Diam. = Major Diam., D. d Pitch, Pitch Diameter, P 4.4 ~ Minor Nom. Diam. = Major Diam., Diameter, D i e di D. d ~- 1.221 1.383 Pitch. Pitch Diameter, Minor Diameter, P 4.4 4,dl 1.25 1 11.188 11.350 10.647 10.917 14 2 1.5 1.25 1 12.701 13.026 13.188 13.350 11.835 12.376 12.647 12.917 1.6 0.35 0.2 1.373 1.470 1.8 0.35 0.2 1.573 1.670 1.421 1.583 2 0.4 0.25 1.740 1.a38 1.567 1.729 2.2 0.45 0.25 1.908 2.038 1.713 1.929 15 1.5 1 14.026 14.350 13.376 13.917 2.5 0.45 0.35 2.208 2.273 2.013 2.121 16 2 1.5 1 14.701 15.026 15.350 13.835 14.376 14.917 3 0.5 0.35 2.675 2.773 2.459 2.621 17 1.5 1 16.026 16.350 15.376 15.917 3.5 0.6 0.35 3.1 10 3.273 2.850 3.121 4 0.7 0.5 3.545 3.675 3.242 3.459 4.5 0.75 0.5 4.013 4.175 3.688 3.959 5 0.8 0.5 4.480 4.675 4.134 4.459 5.5 0.5 5.175 4.959 6 1 0.75 5.350 5.513 4.917 5.188 7 1 0.75 6.350 6.513 5.917 6.188 8 1.25 1 0.75 7.188 7.350 7.513 6.647 6.917 7.188 9 1.25 1 0.75 8.188 8.350 8.513 7.647 7.917 8. ia8 10 1.5 1.25 1 0.75 9.026 9.188 9.350 9.513 8.376 8.647 8.917 9.188 11 1.5 1 0.75 10.026 10.350 10.513 9.376 9.917 10.188 12 1.75 1.5 10.863 11.O26 10.106 10.376 12 (Cont’d) ~~ ~ 18 2.5 2 1.5 1 16.376 16.70 1 17.026 17.350 15.294 15.835 16.376 16.917 20 2.5 2 1.5 1 18.376 18.701 19.026 19.350 17.294 17.835 18.376 18.917 22 2.5 2 1.5 1 20.376 20.701 21.026 21.350 19.294 19.835 20.376 20.917 24 3 2 1.5 1 22.051 22.701 23.026 23.350 20.752 21.835 22.376 22.917 25 2 1.5 1 23.701 24.026 24.350 22.835 23.376 23.917 26 1.5 25.026 24.376 27 3 2 1.5 1 25.051 25.701 26.026 26.350 23.752 24.835 25.376 25.917 28 2 1.5 1 26.701 27.026 27.350 25.835 26.376 26.917 30 3.5 3 27.727 28.051 26.21 1 26.752 60 --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. Nom. Diam. = Major Diam., D. d Pitch, P Pitch Diameter, Minor Diameter, 9.4 Oi. 4 Nom. Diam. = Major Diam., D. d pitch Minor Pitch, Diameter, P Da4 Diameter, DI, 4 56 5.5 4 3 2 1.5 52.428 53.402 54.051 54.701 55.026 50.046 51.670 52.752 53.835 54.376 58 4 3 2 1.5 55.402 56.051 56.701 57.026 53.670 54.752 55.835 56.376 5.5 4 3 2 1.5 56.428 57.402 58.051 58.701 59.026 54.046 55.670 56.752 57.835 58.376 59.402 60.051 60.701 61.026 57.670 58.752 59.835 60.376 -~ ~ 30 (Cont'dì 2 1.5 1 28.701 29.026 29.350 27.835 28.376 28.917 32 2 1.5 30.701 31 .O26 29.835 30.376 33 3.5 3 2 1.5 30.727 31.051 31.701 32.026 29.21 1 29.752 30.835 31.376 35 1.5 34.026 33.376 36 4 3 2 1.5 33.402 34.051 34.701 35.026 31.670 32.752 33.835 34.376 38 1.5 37.026 36.376 39 4 3 2 1.5 36.402 37.051 37.701 38.026 34.670 35.752 36.835 37.376 40 3 2 1.5 38.051 38.701 39.026 36.752 37.835 38.376 42 4.5 4 3 2 1.5 39.077 39.402 40.051 40.701 41.O26 37.129 37.670 38.752 39.835 40.376 45 4.5 4 3 2 1.5 42.077 42.402 43.051 43.701 44.026 40.129 40.670 41.752 42.835 43.376 48 5 4 3 2 1.5 44.752 45.402 46.051 46.701 47.026 42.587 43.670 44.752 45.835 46.376 50 3 2 1.5 48.051 48.701 49.Q26 46.752 47.835 48.376 52 5 4 3 2 1.5 48.752 49.402 50.051 50.701 51 .O26 46.587 47.670 48.752 49.835 50.376 4 3 2 1.5 52.402 53.051 53.701 54.026 50.670 51.752 52.835 53.376 55 60 ~~~ 62 ~~ ~~~~ ~~ 4 3 2 1.5 ~~~ ~~ 64 6 4 3 2 1.5 60.103 61.402 62.051 62.701 63.026 57.505 59.670 60.752 61335 62.376 65 4 3 2 1.5 62.402 63.051 63.701 64.026 60.670 61.752 62.835 63.376 68 6 4 3 2 1.5 64.1O3 65.402 66.051 66.701 67.026 61.505 63.670 64.752 65.835 66.376 6 3 2 1.5 66.103 67.402 68.051 68.701 69.026 63.505 65.670 66.752 67.835 68.376 72 6 4 3 2 1.5 68.103 69.402 70.051 70.701 71.026 65.505 67.670 68.752 69.835 70.376 75 4 3 2 1.5 72.402 73.051 73.701 74.026 70.670 71.752 72.835 73.376 76 6 4 3 2 1.5 72.103 73.402 74.051 74.701 75.026 69.505 71.670 72.752 73.835 74.376 70 4 61 Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- ACME B1.13M-2001 NONMANDATORY APPENDIX D ASME B1.13M-2001 NONMANDATORYAPPENDIX D Nom. Diam. = Major Diam., D. d Pitch, Pitch Diameter, Minor Diameter, P 4.4 4. 4 Nom. Diam. = Major Diam., 4d 78 2 76.700 75.835 135 80 6 4 3 2 1.5 76.103 77.402 78.051 78.701 79.026 73.505 75.670 76.752 77.835 78.376 6 4 3 2 131.103 132.402 133.051 133.701 128.505 130.670 131.752 132.835 140 82 2 80.701 79.835 85 6 4 3 2 81.103 82.402 83.051 83.701 78.505 80.670 81.752 82.835 8 [Note (111 6 4 3 2 134.804 136.103 137.402 138.051 138.701 131.340 133.505 135.670 136.752 137.835 145 6 4 3 2 86.103 87.402 88.051 88.701 83.505 85.670 86.752 87.835 6 4 3 2 141.103 142.402 143.051 143.701 138.505 140.670 141.752 142.835 150 6 4 3 2 91.103 92.402 93.051 93.701 88.505 90.670 91.752 92.835 8 6 4 3 2 144.804 146.103 147.402 148.051 148.701 141.340 143.505 145.670 146.752 147.835 155 6 4 3 2 96.103 97.402 98.051 98.701 93.505 95.670 96.752 97.835 6 4 3 151.103 152.402 153.051 148.505 150.670 151.752 160 8 6 98.505 100.670 101.752 102.835 154.804 156.103 157.402 158.051 151.340 153.505 155.670 156.752 3 2 101.103 102.402 103.051 103.701 6 4 3 165 6 4 3 161.103 162.402 163.051 158.505 160.670 161.752 110 6 4 3 2 106.103 107.402 108.051 108.701 103.505 105.670 106.752 107.835 170 8 6 4 3 164.804 166.103 167.402 168.051 161.340 163.505 165.670 166.752 115 6 4 3 2 111.103 112.402 113.051 113.701 108.505 110.670 111.752 112.835 175 6 4 3 171.103 172.402 173.051 168.505 170.670 171.752 120 6 4 3 2 116.103 117.402 118.051 118.701 113.505 115.670 116.752 117.835 180 8 6 4 3 174.804 176.103 177.402 178.051 171.340 173.505 175.670 176.752 125 8 INote(1)l 6 4 3 2 119.804 121.103 122.402 123.051 123.701 116.340 118.505 120.670 121.752 122.835 185 6 4 3 181.103 182.402 183.051 178.505 180.670 181.752 190 8 iNote(1)l 6 4 3 2 124.804 126.103 127.402 128.051 128.701 121.340 123.505 125.670 126.752 127.835 8 6 4 3 184.804 186.103 187.402 188.051 181.340 183.505 185.670 186.752 195 6 4 3 191.103 192.402 193.051 188.505 190.670 191,752 90 95 1O0 105 4 --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- 130 ' -~ Pitch. P Pitch Diameter, D2r 62 Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. 4 Minor Diameter, 4, 4 ASME B7.73M-2007 NONMANDATORY APPENDIX D h. d Minor Diameter, Di. di Nom. Diam. = Major Diam.. D. d 3 194.804 196.103 197.402 198.051 191.340 193.505 195.670 196.752 6 4 3 201.103 202.402 203.051 198.505 200.670 201.752 8 6 4 3 204.804 206.103 207.402 208.051 201.340 203.505 205.670 206.752 215 6 4 3 211.103 212.402 213.051 208.505 210.670 211.752 220 8 6 4 3 214.804 216.103 217.402 218.051 211.340 213.505 275.670 216.752 6 4 3 221.103 222.402 223.051 218.505 220.670 221.752 8 6 4 3 224.804 226.103 227.402 228.051 221.340 223.505 225.670 226.752 Nom. Diam. = Major Diam., D. d 200 205 . ~ Pitch, Pitch Diameter, P 8 6 4 225 230 --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- ~~~~ ~ P D2.4 250 8 6 4 3 244.804 246.103 247.402 248.051 241.340 243.505 245.670 246.752 255 6 4 8 6 4 251.103 252.402 248.505 250.670 254.804 256.103 257.402 251.340 253.505 255.670 265 6 4 261.103 262.402 258.505 260.670 270 8 6 4 264.804 266.103 267.402 261.340 263.505 265.670 6 4 271.103 272.402 268.505 270.670 280 8 6 4 274.804 276.103 277.402 271.340 273.505 275.670 285 6 4 281.103 282.402 278.505 280.670 290 8 6 4 284.804 286.103 287.402 281.340 283.505 285.670 295 6 4. 291.103 292.402 288.505 290.670 300 8 6 4 294.804 296.103 297.402 291.340 293.505 295.670 275 ~~~ ~ 6 4 3 231.103 232.402 233.051 228.505 230.670 231.752 240 8 6 4 3 234.804 236.103 237.402 238.051 231.340 233.505 235.670 236.752 6 4 3 241.103 242.402 243.051 238.505 240.670 241.752 01, 4 ~~~ GENERAL NOTE: All dimensions are in millimeters. NOTE: (1) Not yet incorporated in I S 0 724. 63 Copyright ASME International Provided by IHS under license with ASME Minor Diameter, ~~ 235 245 Pitch Diameter, 260 ~~ 210 Pitch, Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. ASME B1.13M-2001 NONMANDATORY APPENDIX E OVERTAPPED NUT THREAD CLASS 6AX This Appendix contains information on internal threads of tolerance class 6AX, which follow current USA practice of overtapping to accommodate as-coated hot-dip galvanized external threads of tolerance class 6g prior to coating. It incorporates thread size limits from IS0 965-5 and is consistent with average galvanizing practice as stated in ASTM A153. TABLE E I ALLOWANCE (FUNDAMENTAL DEVIATION), TOLERANCE CLASS “AX” (IS0 965-5) P Allowance (Fundamental Deviation) for Pitch and Minor Diameters, El [Note 111 1.5 1.75 2 2.5 3 3.5 4 4.5 5 5.5 6 +0.310 +0.365 +0.420 +0.530 +o640 +0.750 +0.860 +O970 +1.080 +1.190 +1.300 Pitch, GENERAL NOTE All dimensions are in millimeters. NOTE: (1) Allowance = + (0.220P 0.020). - 64 --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. NONMANDATORY APPENDIX E ASME B1.13M-2001 - TABLE E2 INTERNAL THREAD LIMITING DIMENSIONS, TOLERANCE CLASS "6AX" FOR NORMAL LENGTH OF ENGAGEMENT (IS0 965-5) ~ Pitch Diameter [Note (211 Minor Diameter [Note (111 , Min. Major Diameter Size Min. Max. Min. Max. Tot. M 1 0 x 1.5 M12 x 1.75 M14 x 2 M16 x 2 M20 x 2.5 M22 x 2.5 M24 x 3 M27 x 3 M30 x 3.5 M36 x 4 M42 x 4.5 M48 x 5 M56 x 5.5 M64x6 8.686 10.47 1 12.255 14.255 17.824 19.824 21.392 24.392 26.961 32.530 38.099 43.667 51.236 58.805 8.986 10.806 12.630 14.630 18.274 20.274 21.892 24.892 27.521 33.130 38.769 44.377 51.986 59.605 9.336 11.228 13.121 15.121 18.906 20.906 22.691 25.69 1 28.477 34.262 40.047 45.832 53.618 61.403 9.516 11.428 13.333 15.333 19.130 21.130 22.956 25.956 28.757 34.562 40.362 46.167 53.973 61.778 0.180 0.200 0.212 0.212 0.224 0.224 0.265 0.265 0.280 0.300 0.315 0.335 0.355 0.375 GENERAL NOTE: All dimensions are in millimeters. NOTES: (1) Dimensions apply before galvanizing or after removal of zinc fragments. (2) Dimensions apply after galvanizing and tapping oversize. --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- 65 Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295. INote (211 10.310 12.365 14.420 16.420 20.530 22.530 24.640 27.640 30.750 36.860 42.970 49.080 57.190 65.300 --`,```,`,,`,,,```,,,`,,,,,`-`-`,,`,,`,`,,`--- Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Shell Services International B.V./5924979112, 06/28/2004 21:41:42 MDT Questions or comments about this message: please call the Document Policy Group at 303-397-2295.