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    ASTM F788-20 REDLINE

    Standard Specification for Surface Discontinuities of Bolts, Screws, Studs, and Rivets, Inch and Metric Series
    • 발행일 : 2020-04-01
    • 발행기관 : ASTM
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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, 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.

국제분류(ICS)코드
페이지수 6
Edition 20

이력정보

No. 표준번호 표준명 발행일 상태
1 ASTM F788-20상세보기 Standard Specification for Surface Discontinuities of Bolts, Screws, Studs, and Rivets, Inch and Metric Series 2020-04-01 표준
2 ASTM F788-20 REDLINE상세보기 Standard Specification for Surface Discontinuities of Bolts, Screws, Studs, and Rivets, Inch and Metric Series 2020-04-01 표준
3 ASTM F788-13(2018)상세보기 Standard Specification for Surface Discontinuities of Bolts, Screws, and Studs, Inch and Metric Series 2018-09-01 구판
4 ASTM F788-13상세보기 Standard Specification for Surface Discontinuities of Bolts, Screws, and Studs, Inch and Metric Series 2013-04-01 구판
5 ASTM F788-12상세보기 Standard Specification for Surface Discontinuities of Bolts, Screws, and Studs, Inch and Metric Series 2008-10-01 구판

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