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【英文标准名称】:ScrewThreads:StandardPracticeforCalculatingandRoundingDimensions
【原文标准名称】:螺纹.尺寸计算和圆整的标准规则
【标准号】:ASMEB1.30-2002
【标准状态】:现行
【国别】:美国
【发布日期】:2002-01-01
【实施或试行日期】:
【发布单位】:美国机械工程师协会(US-ASME)
【起草单位】:ASME
【标准类型】:()
【标准水平】:()
【中文主题词】:米制的;螺钉;尺寸公差;计算方法;计算方法;螺纹;尺寸;数值修约;米制螺纹;MJ螺纹
【英文主题词】:Calculatingmethods;Dimensionaltolerances;Dimensions;Methodsofcalculation;Metric;Metricscrewthreads;MJ-threads;Rounding(numbers);Screwthreads;Screws(bolts);Threads
【摘要】:ThepurposeofthisStandardistoestablishuniformandspecificpracticesforcalculatingandroundingthenumericvaluesusedforinchandmetricscrewthreaddesigndatadimensionsonly.Noattemptismadetoestablishapolicyofroundingactualthreadcharacteristicsmeasuredbythemanufactureroruserofthreadgages.CoveredistheStandardRoundingPolicyregardingthelastfigureordecimalplacetoberetainedbyanumericvalueandthenumberofdecimalplacestoberetainedbyvaluesusedinintermediatecalculationsofthreaddesigndatadimensions.ValuescalculatedtothisStandardforinchandmetricscrewthreaddesigndatadimensionsmayvaryslightlyfromvaluesshowninexistingissuesofASMEB1screwthreadstandardsandaretotakeprecedenceinallneworfuturerevisionsofASMEB1standardsasapplicableexceptasnotedinpara.1.2.ofthisStandard.
【中国标准分类号】:J04
【国际标准分类号】:21_040_10
【页数】:32P.;A4
【正文语种】:英语