Which ASTM standard corresponds to high-strength nuts?

The ASTM standard that corresponds to high-strength nuts is A563. This standard specifically addresses the requirements for carbon and alloy steel nuts used in bolted joints, ensuring that the nuts meet the necessary mechanical and performance specifications for high-strength applications.

ASTM A563 outlines various grades of nuts, including those that are suitable for use with high-strength bolts, providing guidance on properties such as tensile strength, hardness, and corrosion resistance. This is crucial as the integrity of bolted connections in structural steel applications relies heavily on the compatibility of the nuts with the bolts.

The other standards mentioned do not pertain to high-strength nuts. ASTM A494 deals with castings, specifically for high-performance alloys, ASTM A105 is for carbon steel forged fittings, flanges, and valves, and ASTM A976 pertains to the specification for bolts used in structural applications but does not specifically define nuts. Therefore, for high-strength nuts, ASTM A563 is the correct reference standard.