ASTM F812/F812M-2007 英制和米制系列螺母的表面不均匀性用标准规范

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                   【英文标准名称】:     Standard Specification for Surface Discontinuities of Nuts, Inch and Metric Series            【原文标准名称】:     英制和米制系列螺母的表面不均匀性用标准规范            【标准号】:     ASTM F812/F812M-2007            【标准状态】:     现行            【国别】:     美国            【发布日期】:     2007    【实施或试行日期】: 【发布单位】: 美国材料与试验协会(US-ASTM)【起草单位】: F16.93【标准类型】: (Specification)【标准水平】: ()【中文主题词】: 【英文主题词】: Crack; Discontinuities (Surface); Fold; Nut; Seam; Void【摘要】: 1.1 This specification establishes allowable limits for the various types of surface discontinuities that may occur during the manufacture and processing of metric-series nuts with nominal diameters 5 mm and larger and inch-series nuts with nominal diameters  1/4  in. and larger. 1.2 The values stated in either SI (metric) or inch-pound units are to be regarded separately as standard. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification. 1.3 When the engineering requirements of the application necessitate control of surface discontinuities on nuts, the purchaser shall specify conformance to this ASTM specification in the original inquiry and purchase order. 1.3.1 When the engineering requirements of the application necessitate that surface discontinuities on nuts be controlled within limits closer than those specified in this specification, the purchaser shall specify the applicable limits in the original inquiry and purchase order. 1.4 The allowable limits established in this specification for metric nuts, with nominal diameters 5 to 24 mm inclusive, are essentially identical with requirements given in ISO/DIS 6157/II. There are no ISO standards for surface discontinuities on metric-series nuts with nominal diameters larger than 24 mm or on any inch-series nuts. 1.5 The following precautionary caveat pertains only to the test method portion, Section 7, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.【中国标准分类号】: J13【国际标准分类号】: 21_060_20【页数】: 5P.;A4【正文语种】: 英语         
         

sigh007

zjjk1m 发表于 2013-2-26 13:03
咋没有附件啊，斑竹啊

这个已经作废了，给你上传个现行版本的。