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1、BS919-4:2007BRITISHSTANDARDScrewgaugelimitsandtolerances–Part4:Limitsofsizeforgaugesforscrewthreadsofunifiedform1diametersinandlarger---4ICS21.040.10--`,,```,,,,````-`-`,,`,,`,`,,`---NOCOPYINGWITHOUTBSIPERMISSIONEXCEPTASPERMITTEDBYCOPYRIGHTLAWCopyrightBritishStandardsInstitutionProvidedbyIHSunderl
2、icensewithBSI-UncontrolledCopyNoreproductionornetworkingpermittedwithoutlicensefromIHSNotforResaleBS919-4:2007PublishingandcopyrightinformationTheBSIcopyrightnoticedisplayedinthisdocumentindicateswhenthedocumentwaslastissued.©BSI2007ISBN9780580579363ThefollowingBSIreferencesrelatetotheworkonthisst
3、andard:CommitteereferenceTDW/4Draftforcomment07/30158519DCPublicationhistoryFirstpublishedApril1964Secondedition,October2007AmendmentsissuedsincepublicationAmd.no.DateTextaffected--`,,```,,,,````-`-`,,`,,`,`,,`---CopyrightBritishStandardsInstitutionProvidedbyIHSunderlicensewithBSI-UncontrolledCopy
4、NoreproductionornetworkingpermittedwithoutlicensefromIHSNotforResaleBS919-4:2007ContentsForewordiv1Scope12Termsanddefinitions1Section1:Unifiedcoarsethreads,UNC2Section2:Unifiedfinethreads,UNF25Section3:Unifiedextrafinethreads,UNEF42Bibliography62ListoftablesTable1–LimitsofsizeforGOscrewpluggauges(
5、allclassesofthread)2Table2–LimitsofsizeforNOTGOscrewpluggauges(lowaddendumandhighaddendum),Class1Bthreads3Table3–LimitsofsizeforNOTGOscrewpluggauges(lowaddendumandhighaddendum),Class2Bthreads4Table4–LimitsofsizeforNOTGOscrewpluggauges(lowaddendumandhighaddendum),Class3Bthreads5Table5–Limitsofsizef
6、orGOandNOTGOplainpluggaugesforminordiameters6Table6–LimitsofsizeforGOscrewringgauges,solidtype7Table7–LimitsofsizeforNOTGOscrewringgauges,solidtype8Table8–LimitsofsizeforGOscrewcheckplugsforGOscrewringgauges,solidtype9Table9–LimitsofsizeforNOTGOeffectivediametercheckplugsfornewGOscrewringgauges,so
7、lidtypewww.bzfxw.com10Table10–LimitsofsizeforNOTGOeffectivediametercheckplugsforwornGOscrewringgauges,solidtype11Table11–LimitsofsizeforGOscrewcheckplugsforNOTGOeffectivediameterringgauges,solidtype12Table12–Limi