【英文标准名称】:ISOgeneralpurposemetricscrewthreads-Tolerances-Part4:Limitsofsizesforhot-dipgalvanizedexternalscrewthreadstomatewithinternalscrewthreadstappedwithtolerancepositionHorGaftergalvanizing
【原文标准名称】:ISO一般用途米制螺纹公差第4部分:热浸镀锌外螺纹的极限尺寸、与其相配的内螺纹镀锌后攻丝、内螺纹的公差带位置为H或G
【标准号】:ISO965-4-1998
【标准状态】:现行
【国别】:国际
【发布日期】:1998-12
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC1
【标准类型】:()
【标准水平】:()
【中文主题词】:极限尺寸;螺纹;尺寸;公差(测量);ISO螺纹;外螺纹;ISO米制螺纹;热镀锌的
【英文主题词】:Corediameter;Dimensions;Externalthreads;Hot-galvanized;ISOmetricthreads;ISOscrewthreads;Limitdimensions;Outsidediameters;Pitchdiameter;Threads;Tolerances(measurement)
【摘要】:ThispartofISO965specifiesdeviationsandlimitsofsizesforpitchandcrestdiametersforISOgeneralpurposemetricexternalscrewthreadsconformingtoISO262havingabasicprofileaccordingtoISO68-1.ExternalscrewthreadsaccordingtothispartofISO965areintendedtomatewithinternalscrewthreadstappedwithtolerancepositionHorGafterhotdipgalvanizing.ThelimitsofsizesforthetolerancequalityspecifiedarederivedfromtolerancesspecifiedinISO965-1andthefundamentaldeviationsaccordingtothefollowingformula:esaz=-(300+20P)whereesisexpressedinmicrometres;Pisexpressedinmillimetres.ProductsmadewiththreadtolerancesinaccordancewiththispartofISO965mayshowfailureatlowerultimatetensileloadsthanthosespecifiedinISO898-1duetoreductionofthestressarea.ExternalscrewthreadswiththreadtolerancesaccordingtothispartofISO965mustnotbematedwithinternalscrewthreadswiththreadtolerancesaccordingtoISO965-5becausesuchcombinationswillcreatesevereriskforthreadstripping.NOTEIfthetoleranceclass6azisnotspecifiedtheexternalscrewthreadsaretomatewithinternalscrewthreadswithtoleranceposition6AZiftheproductsarecentrifugedandwithhot-dipgalvanizedinternalscrewthreadswithtoleranceposition6AXiftheproductsarenotcentrifuged.
【中国标准分类号】:J04
【国际标准分类号】:21_040_10
【页数】:4P.;A4
【正文语种】:英语