ANAMERICANNATIONALSTANDARDASMEB18.2.1-2010[RevisionofASMEB18.2.1-1996(R2005)]Square,Hex,HeavyHex,andAskewHeadBoltsandHex,HeavyHex,HexFlange,LobedHead,andLagScrews(InchSeries)INTENTIONALLYLEFTBLANK标准分享网www.bzfxw.com免费下载www.bzfxw.comASMEB18.2.1-2010[RevisionofASMEB18.2.1-1996(R2005)]Square,Hex,HeavyHex,andAskewHeadBoltsandHex,HeavyHex,HexFlange,LobedHead,andLagScrews(InchSeries)ANAMERICANNATIONALSTANDARDThreeParkAvenue•NewYork,NY•10016USAwww.bzfxw.comDateofIssuance:October13,2010ThisStandardwillberevisedwhentheSocietyapprovestheissuanceofanewedition.Therewillbenoaddendaissuedtothisedition.ASMEissueswrittenrepliestoinquiriesconcerninginterpretationsoftechnicalaspectsofthisStandard.InterpretationsarepublishedontheASMEWebsiteundertheCommitteePagesathttp://cstools.asme.orgastheyareissued.ASMEistheregisteredtrademarkofTheAmericanSocietyofMechanicalEngineers.ThiscodeorstandardwasdevelopedunderproceduresaccreditedasmeetingthecriteriaforAmericanNationalStandards.TheStandardsCommitteethatapprovedthecodeorstandardwasbalancedtoassurethatindividualsfromcompetentandconcernedinterestshavehadanopportunitytoparticipate.Theproposedcodeorstandardwasmadeavailableforpublicreviewandcommentthatprovidesanopportunityforadditionalpublicinputfromindustry,academia,regulatoryagencies,andthepublic-at-large.ASMEdoesnot“approve,”“rate,”or“endorse”anyitem,construction,proprietarydevice,oractivity.ASMEdoesnottakeanypositionwithrespecttothevalidityofanypatentrightsassertedinconnectionwithanyitemsmentionedinthisdocument,anddoesnotundertaketoinsureanyoneutilizingastandardagainstliabilityforinfringementofanyapplicableletterspatent,norassumesanysuchliability.Usersofacodeorstandardareexpresslyadvisedthatdeterminationofthevalidityofanysuchpatentrights,andtheriskofinfringementofsuchrights,isentirelytheirownresponsibility.Participationbyfederalagencyrepresentative(s)orperson(s)affiliatedwithindustryisnottobeinterpretedasgovernmentorindustryendorsementofthiscodeorstandard.ASMEacceptsrespons...
