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1、BS1580-1:2007BRITISHSTANDARDUnifiedscrewthreadsPart1:Screwthreadswith1diametersinandlarger–---4RequirementsICS21.040.20LicensedCopy::FULLNAME,:DATE,UncontrolledCopy,(c)BSINOCOPYINGWITHOUTBSIPERMISSIONEXCEPTASPERMITTEDBYCOPYRIGHTLAWBS1580-1:2007Publishingandcopyrightinfo
2、rmationTheBSIcopyrightnoticedisplayedinthisdocumentindicateswhenthedocumentwaslastissued.©BSI2007ISBN9780580579264ThefollowingBSIreferencesrelatetotheworkonthisstandard:CommitteereferenceFME/9Draftforcomment07/30158490DCPublicationhistoryFirstpublishedJune1949Secondedit
3、ion,November1953Thirdedition,asParts1and2,September1962Fourthedition,asPart1,December2007AmendmentsissuedsincepublicationAmd.no.DateTextaffectedLicensedCopy::FULLNAME,:DATE,UncontrolledCopy,(c)BSIBS1580-1:2007ContentsForewordivSection1:General11Scope12Normativereference
4、s23Termsanddefinitionsandsymbols24Profileofunifiedscrewthreads3Section2:Standardseries95Diameter/pitchcombinations96Toleranceclassesofexternalandinternalthreads97Limitsofsize,andtolerances,foruncoatedthreads98Allowancesforuncoatedthreads109Coatedthreads1110Gauges1411Des
5、ignationofunifiedscrewthreads16Section3:Specialseries(UNS)6912Diameter/pitchcombinations,fractionalsizes6913Diameter/pitchcombinations,decimalsizes7014ToleranceclassesofexternalandinternalUNSthreads7015Tolerancesandallowances7016CoatedUNSthreads7117DesignationofUNSthrea
6、ds71AnnexesAnnexA(informative)Basesoftolerancesandallowancesforunifiedscrewthreadsinandlarger1---89www.bzfxw.com4AnnexB(informative)Outlineguide,andexamples,forcalculatinglimitsofsizeofuntabulatedUNSscrewthreads95AnnexC(informative)Formsofthecrestofexternalthreads101Ann
7、exD(informative)Generalsymbols103AnnexE(informative)Tolerancesonpitchandflankangleinrelationtotoleranceoneffectivediameter106AnnexF(informative)Standardunifiedthreadseries,guidanceonselectionanduse108AnnexG(informative)Standardunifiedthreadseries,informationandguidancer
8、egardingthetoleranceclasses109Bibliography111ListoffiguresFigure1–Basicprofileofunifiedscrewthreads5Figure2–De
