1、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 Socie
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11、990Copyright 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
12、.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).88Toler
13、ance 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 a
14、s 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 Engineer
15、s(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 bolt
16、s,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