18-9_Edtn_2007.pdf

Plow BoltsAN AMERICAN NATIO NAL STANDARDASME B18.9-2007Revision of ASME B18.9-1996(R2003)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 B18.9-2007Revision of ASME B18.9-1996(R2003)Plow BoltsAN AMERICAN NATIONAL STANDARDThree Park Avenue New York,NY 10016Copyrighted 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.Date of Issuance:June 29,2007This Standard will be revised when the Society approves the issuance of a new edition.There willbe no addenda issued to this edition.ASME issues written replies to inquiries concerning interpretations of technical aspects of thisStandard.Periodically,certain actions of the ASME B18 Committee may be published as Cases.Casesand interpretations are published on the ASME Web site under the Committee Pages athttp:/cstools.asme.org as they are issued.ASME is the registered trademark of The American Society of Mechanical Engineers.This code or standard was developed under procedures accredited as meeting the criteria for American NationalStandards.The Standards Committee that approved the code or standard was balanced to assure that individuals fromcompetent and concerned interests have had an opportunity to participate.The proposed code or standard was madeavailable forpublic review andcomment thatprovides an opportunityfor additional publicinput 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 anyitems mentioned in this document,and does not undertake to insure anyone utilizing a standard against liability forinfringement of any applicable letters patent,nor assume any such liability.Users of a code or standard are expresslyadvised that determination of the validity of any such patent rights,and the risk of infringement of such rights,isentirely their own responsibility.Participation by federal agency representative(s)or person(s)affiliated with industry is not to be interpreted asgovernment or industry endorsement of this code or standard.ASME accepts responsibility for only those interpretations of this document issued in accordance with the establishedASME procedures and policies,which precludes the issuance of interpretations by individuals.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.The American Society of Mechanical EngineersThree Park Avenue,New York,NY 10016-5990Copyright 2007 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.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.CONTENTSForeword.ivCommittee Roster.viCorrespondence With the B18 Committee.vii1Introduction.12General Data.1Tables1Dimensions of No.3 Head Plow Bolts(Round,Countersunk,Square Neck).32Dimensions of No.7 Head Plow Bolts(Round,Countersunk,Reverse Key).43Dimensions of No.4 Repair Head Plow Bolts(Square Head,Countersunk).54Dimensions of No.6 Repair Head Plow Bolts(Round,Countersunk,Heavy Key).65Minimum Thread Lengths of Plow Bolts(2D+0.25).76Tolerance on Length.77Plus Tolerance on Thread Length.7Nonmandatory AppendixADimensions of Obsolete Plow Bolts.9iiiCopyrighted 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.FOREWORDASMEStandardsCommitteeB18fortheStandardizationofBolts,Nuts,Rivets,Screws,Washers,and Similar Fasteners(formerly American National Standards Committee B18)was organizedin March 1992 as Sectional Committee B18 under theaegis of the American Engineering StandardsCommittee(later the American Standards Association,the United States of America StandardsInstitute,and,as of October 6,1969,the American National Standards Institute,Inc.)with theSociety of Automotive Engineers and The American Society of Mechanical Engineers as jointsponsors.Subcommittees 2,5,and 6(later designated as Subcommittee 9)were subsequentlyestablishedandchargedwith theresponsibilitiesforthetechnicalcontent ofstandardsforexternaldrive bolts and nuts,round unslotted head bolts,and plow bolts,respectively.The National Association of Farm Equipment Manufacturers had previously appointed a com-mittee to standardize plow bolts.This committee was at work simplifying the list of types theninuse.Itsfirstrecommendationreducedthetotalnumbertoseventypesrep