ASTM F788/F788M-20e1
英制和公制系列螺栓、螺钉、螺柱和铆钉表面不连续性的标准规范

Standard Specification for Surface Discontinuities of Bolts, Screws, Studs, and Rivets, Inch and Metric Series

ASTM F788/F788M-20e1 发布历史

ASTM F788/F788M-20e1由美国材料与试验协会 US-ASTM 发布于 2023-09-12。

ASTM F788/F788M-20e1在国际标准分类中归属于: 21.060.10 螺栓、螺钉、螺柱。

ASTM F788/F788M-20e1的历代版本如下：

• 2023年 ASTM F788/F788M-20e1 英制和公制系列螺栓、螺钉、螺柱和铆钉表面不连续性的标准规范
• 2020年 ASTM F788-20 英制和米制系列螺栓、螺钉、螺柱和铆钉表面不连续性的标准规范
• 2018年 ASTM F788-13(2018) 螺栓 螺钉和螺柱 英制和公制系列的表面不连续性的标准规格
• 2013年 ASTM F788-13 英制和米制系列螺栓, 螺钉和螺柱表面不连续性的标准规范
• 2012年 ASTM F788-12 英制和米制系列螺栓, 螺钉和螺柱表面不连续性的标准规范
• 2008年 ASTM F788/F788M-08 英制及公制系列的螺栓、螺钉及螺柱的表面不均匀性的标准规范
• 2007年 ASTM F788/F788M-07 螺栓,螺钉和螺柱表面间断性标准规范.英制和米制系列
• 2006年 ASTM F788/F788M-06 螺栓 螺钉和螺柱 英制和公制系列的表面不连续性的标准规格
• 2005年 ASTM F788/F788M-05 英制及公制系列的螺栓、螺钉及螺柱的表面不均匀性的标准规范
• 2002年 ASTM F788/F788M-02 英制及公制系列的螺栓、螺钉及螺柱的表面不均匀性的标准规范
• 1997年 ASTM F788/F788M-97 英制及公制系列的螺栓、螺钉及螺柱的表面不均匀性的标准规范

1.1  This specification establishes allowable limits for the various types of surface discontinuities that may occur during the manufacture and processing of bolts, screws, studs, and rivets including heat-treated machine screws, tapping screws, and sems (the washers of screw-washer assemblies are excluded). This specification covers metric series products with nominal diameters of 4 mm and larger and with specified minimum tensile strengths of 420 MPa and higher; and inch series products with nominal diameters of No. 5 (0.1250 in.) and larger and with specified minimum tensile strengths of 60 000 psi and higher. 1.2  When the engineering requirements of the application necessitate control of surface discontinuities on bolts, screws, studs, or rivets, the purchaser shall specify conformance to ASTM Specification F788/F788M , in the original inquiry and purchase order. 1.2.1  When the engineering requirements of the application necessitate that surface discontinuities on bolts, screws, studs, and rivets 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. 1.3  The allowable limits established in this specification for metric bolts, screws, and studs with nominal diameters from 4 to 24 mm inclusive, are essentially identical with requirements given in ISO 6157/I. There are no ISO standards for surface discontinuities on any inch-series products, or for rivets. 1.4  The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.5  This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

标准号

ASTM F788/F788M-20e1

发布

2023年

发布单位

美国材料与试验协会

当前最新

ASTM F788/F788M-20e1

 

 

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