【英文标准名称】:StandardSpecificationforIn-ServiceTestMethodsforTemporaryGroundingJumperAssembliesUsedonDe-EnergizedElectricPowerLinesandEquipment
【原文标准名称】:断电电源线和设备用临时接地跨接组件的运行中试验方法的标准规范
【标准号】:ASTMF2249-2003
【标准状态】:现行
【国别】:美国
【发布日期】:2003
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:服务设施;组装件;电力导线;电力系统;临时的;线性设备;接地装置
【英文主题词】:temporary;powerlines;grounding;electricpowersystems;assemblies;lineequipment;services
【摘要】:
【中国标准分类号】:K85
【国际标准分类号】:29_120_50
【页数】:7P;A4
【正文语种】:英语


Product Code:SAE AS8879
Title:Screw Threads - UNJ Profile, Inch
Issuing Committee:E-25 General Standards For Aerospace And Propulsion Systems
Scope: This SAE Aerospace Standard (AS) specifies the characteristics of the UNJ profile inch series of screw threads, to include a mandatory controlled radius of 0.18042P to 0.15011P at the root of the external thread and with the minor diameter of both external and internal threads increased to provide a basic thread height of 0.5625H in order to accommodate the external thread maximum root radius. The following detailed requirements are included: a. UNJ basic profile and design profiles; b. standard series of diameter-pitch combinations for nomral thread diameters from .060 to 6.000 inches; c. standard thread classes and form tolerances; d. formulae for thread dimensions and tolerances; e; method of designating UNJ threads; f. inspection and verification requirements; g. tables for selected diameter-pitch combinations for aerospace screws, bolts, nuts, shaft and bearing retaining screw threads, fluid fittings, and other component thread sizes; h. tables for UNJ screw threads limiting dimensions and tolerances; and i. symbols for UNJ thread dimensions and tolerances.