JIS B0251-2008 公制螺纹极限量规

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【英文标准名称】:Limitgaugesformetricscrewthreads
【原文标准名称】:公制螺纹极限量规
【标准号】:JISB0251-2008
【标准状态】:现行
【国别】:日本
【发布日期】:2008-03-20
【实施或试行日期】:2008-03-21
【发布单位】:日本工业标准调查会(JP-JISC)
【起草单位】:TechnicalCommitteeonTestingandMeasurementTechnology
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:ThisStandardspecifiesthelimitgaugesusedforthedimensionalinspectionofmetricscrewthreadsspecifiedinJISB0205-2(hereafterreferredtoas"limitgaugesforscrewthreads"),andgaugesusedforcheckingandsettingofthem(hereafterreferredtoas"checkgaugesandsettinggauges")(Thelimitgaugesforscrewthreads,thecheckgaugesandthesettinggaugesarecollectivelyreferredtoas"gauges"simply).Otherinspectionmethods,forexample,themeasurementbytheindicatinginstru-mentmaybeused;however,theinspectionusinggaugesspecifiedinthisStandardalwaystakesprecedence.ThisStandardaimstospecifythemeanstodiscriminatetheworkpiecethreadswithinthepermissiblelimitsizesfromothers.Thefollowingprinciplesshallapplytoensuretheinterchangeabilityoftheworkpiecethreadsandtoavoiddisputesbetweenthemanufacturerandthepurchaser.a)Themanufacturershallnotdeliveranyworkpiecethreadwhosethreadsizes(forexample,thesinglepitchdiameterandthevirtualpitchdiameter)areoutsidethepermissiblelimitsizes.b)Thepurchasershallnotrejectanyworkpiecethreadwhosethreadsizes(forex-ample,thesinglepitchdiameterandthevirtualpitchdiameter)arewithinthepermissiblelimitsizes.Tosatisfythesetwoprinciples,thisStandardspecifiesclassesandsizesofgaugesrequiredfortheinspectionofscrewthreads,conditionsforusingthesegauges,andtheinspectionfortheworkpiecethreads.NOTE:TheInternationalStandardcorrespondingtothisStandardisasfollows.ISO1502"1996ISOgeneral-purposemetricscrewthreads-Gaugesandgauging(MOD)Inaddition,symbolswhichdenotethedegreeofcorrespondenceinthecontentsbetweentherelevantInternationalStandardandJISareIDT(identical),MOD(modified),andNEQ(notequivalent)accordingtoISO/IECGuide21.
【中国标准分类号】:J42
【国际标准分类号】:17_040_30;21_040_10
【页数】:102P;A4
【正文语种】:日语