【英文标准名称】:Screwingtaps-Specificationforunifiedgroundthreadtaps-Manufacturingtolerances
【原文标准名称】:丝锥.统一磨制螺纹丝锥规范:制造公差
【标准号】:BS949-2-1992
【标准状态】:现行
【国别】:英国
【发布日期】:1992-12-15
【实施或试行日期】:1992-12-15
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:尺寸公差;作标记;尺寸;等级(质量);名称与符号;螺距;角度公差;统一螺纹;英国细牙标准螺纹;直径;攻丝刀具;英国标准螺纹;惠氏螺纹;切削工具;丝锥
【英文主题词】:Angulartolerances;BritishAssociationscrewthreads;BSFscrewthreads;Cuttingtools;Designations;Diameter;Dimensionaltolerances;Dimensions;Grades(quality);Marking;Taps(threading);Threadpitch;Threadingtools;Unifiedscrewthreads;Whitworthscrewthreads
【摘要】:ThisPartofBS949specifiesdimensionsandtolerancesforscrewingtapsforthefollowingthreads:a)Unified(ISOinch)general-purposescrewthreads,coarsethreadseries(UNC),fromno.1tono.12andfrom1/4into4indiameterinaccordancewithBS1580:Parts1&2:1962andBS1580:Part3:1965;b)Unified(ISOinch)general-purposescrewthreads,finethreadseries(UNF),fromno.0tono.12andfrom1/4into3/2indiameteralsoinaccordancewithBS1580:Parts1&2:1962andBS1580:Part3:1965;c)inannexC,BritishStandardWhitworth(BSW)threadsfrom1/8into4indiameterandBritishStandardFine(BSF)threadsfrom3/16into3indiameterinaccordancewithBS84:1956;d)alsoinannexC,BritishAssociation(BA)threadsfromno.14tono.0inaccordancewithBS93:1951.NOTE1.AnnexAprovidesinformationfromwhichmaybecalculatedthedimensionsandtolerancesoftapsforallUnifiedthreads,includingtheextrafinethreadseries(UNEF)andtheconstant-pitchseries(UN).NOTE2.AnnexBgivesanexampleofacalculationofthedimensionsofthethreadedportionofatap.
【中国标准分类号】:J41
【国际标准分类号】:25_100_50
【页数】:24P.;A4
【正文语种】:英语