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1、JISB2710-4=-(JSMA/JSA)1.eafspringsPart4:SpecificationofproductsICS21.160Referncnumber:JISB2710*4:2021(E)JISJAPANESEINDUSTRIA1.STANDARDTrans1.atedandPub1.ishedbyJapaneseStandardsAssiatnDateofEstab1.ishment20080320DateofRevision-2021-1.1.22DateofPub1.icNoticeinOfficia1.Gazette-20211.1.22Investigatedby
2、：JapaneseIndustria1.StandardsCommitteeStandardsHoardforISOareaJ1.SB27104:202bFirstEng1.isheditionpub1.ishedin2022-03Trans1.atedandpub1.ishedby:JapaneseStandardsAssociationMiUMTBUiIdi呷3-13-12,MMMinawkU,Tokyo,108-0073JAPAX!ntheCVentofanydoubtsarisingastothecontents,theorigina1.J1.Sistobethefina1.autho
3、rity.JSA2022A1.1.righMrv*rvM.1.nkMonnuybereproducedaru1.UUedinanyfSi1.encer26Rivet26(i)FOfCWOrdThisJapaneseIndustria1.StandardhasbeenrevisedbytheMinisterofEconomy,TradeandIndustrythroughde1.iberationsattheJapaneseItrduf1.tria1.StandardsCommitteeastheresu1.tofproposa1.forrevisionofJapaneseIndustria1.
4、StandardsubmittedbyJapanSpringManufacturersASSoCiatiOn(JSMA)/JapaneseStandardsAssociation(JS)withadraftbeingattached,basedontheprovisionofArtic1.e12.paragraph(1)oftheIndustria1.Standardizationctapp1.iedmutatismutandispursuanttotheprovisionofArtic1.e16ofthesaidct.Thiseditionrep1.acesthepreviouseditio
5、n(JISB271Q:2008).whichhasbeentechnica1.1.yrevised.ThisJISdocumentisprotectedbytheCopyrightAct.Attentionisdrawntothepossibi1.itythatsomepartsofthisStandardmayn11ictwithpatentrights,pub1.ishedpatentapp1.icationoruti1.itymode1.rights.There1.evantMinisterandtheJapaneseIndustria1.StandardsCommitteearenot
6、responsib1.eforidentifyinganyofsuchpatentrights,pub1.ishedpatentapp1.icationoruti1.itymode1.rights.JISB2710seriesconsistsofthefo1.1.owing4partsunderthegenera1.tit1.e1.eafsprings:Part 1 Vocabu1.aryPart 2 DesignmethodPart 3 MethodofmeasuringandtestingPart 4 Specificationofproducts(iii):BIank1.1.eafspr
7、ingsPart4:SpecificationofproductsIntroductionThisJapaneseIndustria1.StandardhasbeenpreparedbasedonISO18137:2015.Edition1,withsomemodificationsofthetechnica1.contents.Thevertica1.1.inesonbothsidesanddottedunder1.inesindicatechangesfromthecorrespondingInternationa1.Standard.1.istofmodificationswiththe
8、exp1.anationsisgiveninAnnexJA.1 ScopeThisStandardprovidestheproductspecificationsofthe1.eafspringsmain1.yusedforautomobi1.es,rgihyayro1.1.inggtocksandindustria1.machines.NOTETheInternationa1.StandardcorrespondingtothisStandardandthesymbo1.ofdegreeofcorrespondenceareasfo1.1.ows.ISO18137:20151.eafSPri
9、ngSTechnica1.speci11cations(MOD)Inaddition,symbo1.swhichdenotethedegreeofcorrespondenceinthecontentsbetweenthere1.evantInternationa1.StandardandJISareIDTGdentica1.),MOD(modified),andNEQ(notequiva1.ent)accordingtoISO/IECGuide21-1.2 NormativereferencesPartora1.)oftheprovisionsofthefo1.1.owingstandards
10、,throughreferenceinthistext,constitutePrOViHiOnSofthisStandard.Themostrecenteditionsofthestandards(inc1.udingamendments)indicatedbe1.owsha1.1.beapp1.ied.JISB0103SpringsVocabu1.aryNOTENormativereferenceinthecorrespondingInternationa1.StandardISO26909SpringsVocabu1.aryJISB0156SpringsSymbo1.sNOTENormat
11、ivereferenceinthecorrespondingInternationa1.Standard:ISO16249SpringsSymbo1.sJISB02052ISOgenera!purposemetricscrewthreadsPart2:Genera1.p1.anJISB02092ISOgenera!purposemetricscrewthreadsTo1.erancesPart21.unitsofsizesforgenera1.purposeexterna1.andinterna1.screwthreadsMediumqua1.ityJISB0401-2Geometrica1.
12、productspecifications(GPS)ISOcodesystemforto1.eranceson1.inearsizesPart2:Tab1.esofstandardto1.erancec1.assesand1.imitdeviationsforho1.esandshaftsJISB1021To1.erancesforfastenersPart1Bo1.ts,SCrCWSStUdSandnuts一2B27104：2O21ProductgradesA.BandCJ1.SB1051Mechanica1.propertiesoffastenersmadeofcarbonstee1.anda1.1.oystee1.Bo1.ts,screwsandstudswithspecifiedpropertyc1
