View Cart
USA Grade Dh Heavy Hex Nut, A563, Plain (USA)(Inch)
USA-made Heavy Hex Nuts A563 Grade DH Plain are premium, high-strength fasteners manufactured in accordance with ASTM A563 Grade DH specifications. Produced from heat-treated carbon or alloy steel, these heavy-pattern nuts feature larger wrenching flats and increased thickness for superior strength and load distribution. The plain (uncoated) finish provides a natural steel surface, suitable for indoor applications or for post-treatment processes such as galvanizing or plating.
Proudly manufactured in the USA, A563 Grade DH Heavy Hex Nuts are designed for use with high-strength structural bolts including ASTM A325 and A490. Known for their exceptional mechanical performance, these nuts are widely used in structural steel fabrication, bridge construction, and heavy equipment assembly. The plain finish offers flexibility for additional coatings or controlled-environment use while maintaining full compliance with ASTM and AISC specifications.
