2012_2017.pdf

AN AM E R IC AN NAT IO NAL STANDARD ASME B18.9-2012(Revision of ASME B18.9-2007)Plow BoltsREAFFIRMED 2017ASME B18.9-2012(Revision of ASME B18.9-2007)Plow BoltsAN AMERICAN NATIONAL STANDARDThree Park Avenue New York,NY 10016 USADate of Issuance:July 25,2012This Standard will be revised when the Society approves the issuance of a new 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.Errata to codes and standards may be posted on the ASME Web site under the Committee Pages toprovide corrections to incorrectly published items,or to correct typographical or grammatical errorsin codes and standards.Such errata shall be used on the date posted.The Committee Pages can be found at http:/cstools.asme.org/.There is an option available toautomatically receive an e-mail notification when errata are posted to a particular code or standard.ThisoptioncanbefoundontheappropriateCommitteePageafterselecting“Errata”inthe“PublicationInformation”section.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 assumes 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 2012 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.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).65Clipped Head Plow Bolt.66Elliptical Head Plow Bolt.77Minimum Thread Lengths of Plow Bolts(2D+0.25).88Tolerance on Length.89Plus Tolerance on Thread Length.8Nonmandatory AppendixADimensions of Obsolete Plow Bolts.9iiiFOREWORDASMEStandardsCommitteeB18fortheStandardizationofBolts,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(ASA),the United States of AmericaStandards Institute(USASI),and,as of October 6,1969,the American National Standards Institute(ANSI)with the Society of Automotive Engineers(SAE)and The American Society of MechanicalEngineers(ASME)as joint sponsors.Subcommittees 2,5,and 6(later designated asSubcommittee 9)were subsequently established and charged with the responsibilities for thetechnical content of standards for external drive bolts and nuts,round unslotted head bolts,andplow bolts,respectively.The National Association of Farm Equipment Manufacturers(NAFEM)had previouslyappointed a committee to standardize plow bolts.This committee was at work simplifying thelist of types then in use.Its first recommendation reduced the total number to seven typesrepresenting 182 varieties.These were the No.1 Key Head;No.2 Round Countersunk;No.3Round Head,Square Neck;No.4 Square Head;No.5 Large Round Countersunk;No.6 RoundHead,Heavy Key;and No.7 Round Head,Reverse Key.Later