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【英文标准名称】:Plainwashers.Normalseries.ProductgradeA
【原文标准名称】:平垫圈.标准系列.产品等级A级
【标准号】:BSENISO7089-2000
【标准状态】:现行
【国别】:英国
【发布日期】:2000-09-15
【实施或试行日期】:2000-09-15
【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】:名称与符号;垫圈;硬度;优先尺寸;等级(质量);尺寸公差;可拆零件;直径;孔;尺寸规格
【英文主题词】:Deliveryconditions;Designations;Dimensions;Fasteners;Productgrades;Properties;Separatingparts;Shallow;Tolerances(measurement);Washers
【摘要】:ThisInternationalStandardspecifiesthecharacteristicsofnormal-series,product-grade-Aplainwashersinthe200HVand300HVhardnessclassesandofnominalsizes(nominalthreaddiameters)rangingfrom1,6mmto64mminclusive.Washersofhardnessclass200HVaresuitablefor—hexagonboltsandscrewsofproductgradesAandBinpropertyclassesuptoandincluding8.8;—hexagonnutsofproductgradesAandBinpropertyclassesuptoandincluding8;—hexagonbolts,screwsandnutsofstainlesssteelofsimilarchemicalcomposition;—case-hardenedthreadrollingscrews.Washersofhardnessclass300HVaresuitablefor—hexagonboltsandscrewsofproductgradesAandBinpropertyclassesuptoandincluding10.9;—hexagonnutsofproductgradesAandBinpropertyclassesuptoandincluding10.IfdimensionsotherthanthoselistedinthisInternationalStandardarerequired,theyshouldbeselectedfromthosegiveninISO887.Whensoftmaterialpiecesareclamped,orlargeclearanceholesintheworkpieceareused,theusershouldcheckthetechnicalsuitabilityofthistypeofwasher.
【中国标准分类号】:J13
【国际标准分类号】:21_060_30
【页数】:4P.;A4
【正文语种】:英语