【英文标准名称】:ISOgeneralpurposemetricscrewthreads-Tolerances-Limitsofsizesforinternalscrewthreadstomatewithhot-dipgalvanizedexternalscrewthreadswithmaximumsizeoftolerancepositionhbeforegalvanizing
【原文标准名称】:ISO普通米制螺纹.公差.第5部分:与镀锌前公差带位置为H最大尺寸的热浸镀锌外螺纹相匹配的内螺纹的极限尺寸
【标准号】:BSISO965-5-1999
【标准状态】:现行
【国别】:英国
【发布日期】:1999-04-15
【实施或试行日期】:1999-04-15
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:尺寸公差;直径;螺距;尺寸;尺寸;螺纹形状;长度;内螺纹;热浸镀锌;ISO米制螺纹;螺纹紧固件;名称与符号;螺纹
【英文主题词】:Corediameter;Dimensions;Hot-galvanized;Internalthreads;ISOmetricthreads;ISOscrewthreads;Limitdimensions;Outsidediameters;Pitchdiameter;Threads;Tolerances(measurement)
【摘要】:ThispartofISO965specifiesdeviationsandlimitsofsizesforpitchandcrestdiametersforISOgeneralpurposemetricinternalscrewthreadsconformingtoISO262havingbasicprofileaccordingtoISO68-1.InternalscrewthreadsaccordingtothispartofISO965areintendedtomatewithexternalscrewthreadswithmaximumsizeoftolerancepositionhbeforehot-dipgalvanizing.ThelimitsofsizesforthetolerancequalityspecifiedarederivedfromtolerancesspecifiedinISO965-1.ThefundamentaldeviationsforinternalscrewthreadswithatolerancepositionAZhavebeencalculatedaccordingtothefollowingformula:ElAZ=+(300+20P)whereEIisexpressedinmicrometres;Pisexpressedinmillimetres.ThefundamentaldeviationsforinternalscrewthreadswithatolerancepositionAXhavebeencalculatedaccordingtothefollowingformula:ElAX=+{220P-20)whereEIisexpressedinmicrometres;Pisexpressedinmillimetres.ProductsmadewiththreadtolerancesaccordingtothispartofISO965mayshowloadfailurewhentestedinaccordancewithISO898-2withoutadjustmentoftheothermechanicalproperties.InternalscrewthreadswiththreadtolerancesaccordingtothispartofISO965mustnotbematedwithexternalscrewthreadshavingthreadtolerancesaccordingtoISO965-4becausesuchcombinationswillcreatesevereriskofthreadstripping.NOTEInternalscrewthreadswithtoleranceclass6AZareprimarilyintendedtomatewithexternalscrewthreadscentrifugedafterhot-dipgalvanizing.Internalscrewthreadswithtoleranceclass6AXareprimarilyintendedtomatewithhot-dipgalvanizedexternalscrewthreadswithheavycoatingnotcentrifuged.
【中国标准分类号】:J13
【国际标准分类号】:21_040_10
【页数】:10P;A4
【正文语种】:英语