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ASTM A563-15

Current Revision

Standard Specification for Carbon and Alloy Steel Nuts

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1.1 This specification2 covers chemical and mechanical requirements for eight grades of carbon and alloy steel nuts for general structural and mechanical uses on bolts, studs, and other externally threaded parts.

Note 1: See Appendix X1 for guidance on suitable application of nut grades.

1.2 The requirements for any grade of nut may, at the supplier's option, and with notice to the purchaser, be fulfilled by furnishing nuts of one of the stronger grades specified herein unless such substitution is barred in the inquiry and purchase order.

1.3 Grades C3 and DH3 nuts have atmospheric corrosion resistance and weathering characteristics comparable to that of the steels covered in Specifications A242/A242M, A588/A588M, and A709/A709M. The atmospheric corrosion resistance of these steels is substantially better than that of carbon steel with or without copper addition (see 5.2). When properly exposed to the atmosphere, these steels can be used bare (uncoated) for many applications.

Note 2: A complete metric companion to Specification A563 has been developed—A563M; therefore, no metric equivalents are presented in this specification.

1.4 Terms used in this specification are defined in Terminology F1789 unless otherwise defined herein.


This specification covers chemical and mechanical requirements for eight property classes of hex and hex-flange carbon and alloy steel nuts for general structural and mechanical uses on bolts, studs, and other externally threaded parts. Materials shall be tested and the individual grades shall conform to specified values of material such as hardness and proof load, chemical, and mechanical requirements. Classes 8S3 and 10S3 nuts have atmospheric corrosion resistance and weathering characteristics comparable to those of the steels. The atmospheric corrosion resistance of these steels is substantially better than that of carbon steel with or without copper addition. When properly exposed to the atmosphere, these steels can be used bare (uncoated) for many applications.


SDO ASTM: ASTM International
Document Number A563
Publication Date May 1, 2015
Language en - English
Page Count 9
Revision Level 15
Supercedes
Committee F16.02
Publish Date Document Id Type View
May 1, 2015 A0563-15 Revision
Dec. 1, 2007 A0563-07A Revision
Aug. 1, 2007 A0563-07 Revision
Aug. 1, 2004 A0563-04A Revision
Jan. 1, 2004 A0563-04 Revision
Jan. 10, 2000 A0563-00 Revision
April 1, 2014 A0563-07AR14 Reaffirmation