MachineScrews,TappingScrews,andMetallicDriveScrews(InchSeries)ANAMERICANNATIONALSTANDARDASMEB18.6.3-2013(RevisionofASMEB18.6.3-2010)Copyright2013bytheAmericanSocietyofMechanicalEngineers.NoreproductionmaybemadeofthismaterialwithoutwrittenconsentofASME.cCopyright2013bytheAmericanSocietyofMechanicalEngineers.NoreproductionmaybemadeofthismaterialwithoutwrittenconsentofASME.cASMEB18.6.3-2013(RevisionofASMEB18.6.3-2010)MachineScrews,TappingScrews,andMetallicDriveScrews(InchSeries)ANAMERICANNATIONALSTANDARDTwoParkAvenue•NewYork,NY•10016USACopyright2013bytheAmericanSocietyofMechanicalEngineers.NoreproductionmaybemadeofthismaterialwithoutwrittenconsentofASME.cDateofIssuance:October11,2013ThisStandardwillberevisedwhentheSocietyapprovestheissuanceofanewedition.ASMEissueswrittenrepliestoinquiriesconcerninginterpretationsoftechnicalaspectsofthisStandard.PeriodicallycertainactionsoftheASMEB18CommitteemaybepublishedasCases.CasesandinterpretationsarepublishedontheASMEWebsiteundertheCommitteePagesathttp://cstools.asme.org/astheyareissued.ErratatocodesandstandardsmaybepostedontheASMEWebsiteundertheCommitteePagestoprovidecorrectionstoincorrectlypublisheditems,ortocorrecttypographicalorgrammaticalerrorsincodesandstandards.Sucherratashallbeusedonthedateposted.TheCommitteePagescanbefoundathttp://cstools.asme.org/.Thereisanoptionavailabletoautomaticallyreceiveane-mailnotificationwhenerrataarepostedtoaparticularcodeorstandard.ThisoptioncanbefoundontheappropriateCommitteePageafterselecting“Errata”inthe“PublicationInformation”section.ASMEistheregisteredtrademarkofTheAmericanSocietyofMechanicalEngineers.ThiscodeorstandardwasdevelopedunderproceduresaccreditedasmeetingthecriteriaforAmericanNationalStandards.TheStandardsCommitteethatapprovedthecodeorstandardwasbalancedtoassurethatindividualsfromcompetentandconcernedinterestshavehadanopportunitytoparticipate.Theproposedcodeorstandardwasmadeavailableforpublicreviewandcommentthatprovidesanopportunityforadditionalpublicinputfromindustry,ac...
