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【英文标准名称】:Specificationforboltsandscrewsincorporatingeitherunderheadlockingoranti-rotationfeatures
【原文标准名称】:装有既可以头下锁紧又可以防止滚动功能的螺栓和螺钉规范
【标准号】:BS7814-1995
【标准状态】:现行
【国别】:英国
【发布日期】:1995-12-15
【实施或试行日期】:1995-12-15
【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】:硬度测量;抗拉强度;脱碳;脆裂;作标记;抗振紧固件;维氏硬度测量;硬度试验;螺纹紧固件;钢;等级(质量);螺栓;螺钉;脱碳试验;外螺纹紧固件;硬度
【英文主题词】:Bolts;Decarburization;Decarburizationtests;Embrittlement;External-threadfasteners;Grades(quality);Hardness;Hardnessmeasurement;Hardnesstesting;Marking;Screws(bolts);Steels;Tensilestrength;Threadedfasteners;Vibration-resistantfasteners;Vickershardnessmeasurement
【摘要】:ThisBritishStandardspecifiesthematerials,mechanicalpropertiesandmarkingrequirementsforboltsandscrewsincorporatingeitherunderheadlockingoranti-rotationfeatureswhentestedatanambienttemperaturebetween15℃and30℃.Itappliestoboltsandscrews:a)withISOmetricM2toM20threadsconformingtoBS3643:Part2:1981;b)withmechanicalproperties80,90or100asappropriate;c)forusewithinthetemperaturerange-50℃to+250℃.Asthedecarburizationofanyunderheadlockingoranti-rotationfeaturewillseriouslyimpairitsintendedfunction,partialorcompletedecarburizationasgiveninBSEN20898-1:1992doesnotapplytothisstandard.Thereisinsteadarequirementforcarbonrestorationtoensurethatnodecarburizationofthelockingoranti-rotationfeaturetakesplaceduringtheheattreatmentprocess.NOTE.Performanceattemperaturesoutsidetheoperatingrangeisnotwithintherequirementsofthisstandard.note:1)Withtheexceptionofsurfacehardnessandstrengthunderwedgeloadingthemechanicalproperties80,90and100areinlinewiththerespectivemechanicalpropertiesofpropertyclasses8.8,9.8and10.9ofBSEN20898-1:1992
【中国标准分类号】:J13
【国际标准分类号】:21_060_10
【页数】:12P.;A4
【正文语种】:英语