1985_2016.pdf

REAFFIRMED 2016Intentionally left blank AN AMERICAN NATIONAL STANDARD Gages and Gaging for MJ Series Metric Screw Threads ANWASME 61.22M-1985(REVISION OF ANSI B1.22-1978)SPONSORED AND PUBLISHED BY THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS United Engineering Center 345 East 47th Street New York,N.Y.10017 Date of Issuance:December 31,1986 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 to this Edition.This code or standard was developed under procedures accredited as meeting the criteria for American National Standards.The Consensus Committee that approved the code or standard was balanced to assure that individuals from competent and concerned interests have had an oppor-tunity to participate.The proposed code or standard was made available for public review and comment which provides an opportunity for additional public input from industry,academia,reg-ulatory 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 only those interpretations issued in accordance with governing ASME procedures and policies which preclude the issuance of interpretations by individual vol-unteers.No part of this document may be reproduced in any form,in an electronic retrieval system or otherwise,without the prior written permission of the publisher.Copyright 0 1986 by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS All Rights Reserved Printed in U.S.A.FOREWORD(This Foreword is not part of ANSVASME B1.22M-1985.)American National Standards Committee Bl for the standardization of screw threads was organized in 1920 as Sectional Committee Bl under the aegis of the American Engineering Standards Committee later the American Standards Association,then the United States of America Standards Institute,and as of October 6,1969,the American National Standards Institute,Inc.(ANSI),with the Society of Automotive Engineers and the American Society of Mechanical Engineers as joint sponsors.As a result,a great deal of effort was expended through the years toward development of several inch screw thread standards,including the current inch gaging standard,ANSVASME B1.2-1983,Gages and Gaging for Unified Inch Screw Threads.Recognizing the increasing need of industries in the United States for documentation of American gaging practice for metric screw threads,American National Standards Committee Bl charged its thread gaging Subcommittee 2 with the responsibility for producing such a standard.ANSI Bl.16-1972 was developed as a standard for American gaging practice for metric screw threads;ANSVASME Bl.l6M-1984 is a revision of that standard.With the development of the MJ series of metric screw threads,documented in ANSI B1.2 1,it became necessary to document the required thread gages that were not covered in the ANSI Bl.16 standard.Committee Bl asked Subcommittee 2 to develop such a standard.ANSI B1.22-1978 was developed by Subcommittee 2 to provide the essential specifications for gages and gaging practice necessary to fulfill the provisions of the product thread document ANSI B1.21,Metric Screw Threads-MJ Profile.In 1982,Committee Bl was reorganized as the ASME Standards Committee Bl,and it has operated under American Society of Mechanical Engineers procedures to produce and update standards which become ANSI Standards after final approval by the American National Stan-dards Institute.This publication,designated ANSVASME B1.22M-1985,does not have any references to conformance criteria,as Committee Bl has established B1.3M for all levels of acceptability for screw threads.A considerable amount of new material is added to cover the many options of gages and measuring equipment shown in B1.3M.Mn/Mt gages have been identified as NOT GO gages.The proposed Standard was submitted by the ASME Board of Standardization to the Amer-ican National Standards Institute.It was approved and formally designated as an American National Standard on September 26,1985.111 Intentionally left blank ASME STANDARDS COMMITTEE Bl Standardization and Unification of Screw Threads(The following is the roster of the Committee at the time of approval of this Standard.)OFFICERS D.J.Ema