2-2M_R2005_E1982.pdf

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 Metric qound Head Square Neck Bolts ANSI/ASME B18.5.2.2M-1982 c _ P REAFFIRMED 2000 FOR CURRENT COMMITTEE PERSONNEL PLEASE SEE ASME MANUAL AS1 1 Government Key Words:Bolt,Round Head,Square Neck-Metric SPONSORED AND PUBLISHED BY T H E A M E R I C A N S O C I E T Y O F M E C H A N I C A L E N G I N E E R S United Engineering Center 345 East 47th Street New York,N.Y.1 001 7 Copyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.REAFFIRMED 2005FOR CURRENT COMMITTEE PERSONNELPLEASE E-MAIL CSasme.orgDate of Issuance:November 30,1982 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 opportunity 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,regulatory agen-cies,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(s1 or person(s)affiliated with industry is not to be interpreted as government or industry endorsement of this code or standard.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 1982 by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS All Rights Resewed Printed in USA.Copyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.FOREWORD ASME Committee B18 for the standardization of bolts,screws,nuts,rivets,and similar fasteners was organized in March 1922 as Sectional Committee B18 under the aegis of the American Engineering Stan-dards Committee(later the American Standards Association,the United States of America Standads Institute and,as of October 6,1969,the American National Standards Institute,Incorporated),with the Society of Automotive Engineers and the American Society of Mechanical Engineers as joint sponsors.Subcommittee 5 was subsequently established and charged with the responsibility for technical content of standards covering round,unslotted head bolts.At its meeting on December 4,1974,Committee B18 authorized preparation of a series of standards for metric fasteners.Subcommittee 5 was assigned responsibility for developing standards for metric round head bolts,including plow bolts.In December 1979,drafting of this Standard was started.The draft was circulated for letter ballot of Subcommittee 5 and Committee B18 in February,1982.Following approval by Subcommittee 5 and Committee B18,this Standard was approved by the sponsor and submitted to the American National Standards Institute for designation as an American National Standard.This was granted on August 24,1982.iii Copyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.ASME STANDARDS COMMITTEE B18 STANDARDIZATION OF BOLTS,NUTS,RIVETS,SCREWS,WASHERS,AND SIMILAR FASTENERS OFFICERS J.B.Levy,Chairman H.W.Ellison,Vice-Chairman E.Schwartt.Vice-chairman R.McGinnit,Secretary COMMllTEE PERSONNEL AMERICAN SOCIETY OF AGRICULTURAL ENGINEERS E.R.Friesth,Coal Valley,Illinois AMERICAN SOCIETY OF MECHANICAL ENGINEERS,THE A.R.Machell,Jr.,Xerox Corporation,Rochester,New York C.R.Adam,Alternate,Newport News Shipbuilding&Dry Dock Company,Newport News,Virginia K.E.Mdullough,SPS Technologies,Jenkintown,Pennsylvania ANTI-FRICTION BEARING MANUFACTURERS ASSOCIATION W.J.Demer.FMC Corporation,Indianapolis,Indiana ENGINE MANUFACTURERS ASSOCIATION G.A.Russ,Cummins Engine Company,Columbus,Indiana FARM&INDUSTRIAL EQUIPMENT INSTITUTE D.A.Clever,Deere&Company,Moline,Illinois HAND TOOLS INSTITUTE R.F.Keppner,J.H.Williams Company,Buffalo,New York INDUSTRIAL FASTENERS INSTITUTE R.B.Belford,Industrial Fasteners Institute,Cleveland,Ohio D.A.Garrison,Russell,Burdsall&Ward,Incorporated,Rock Palls,Illinois E.Sterling,Parker Kalo