A563 Heavy Hex Nuts
A563 Heavy Hex Nuts - Grade DH ; CSBN / Fasteners - Structural / Nuts / Heavy Hex Nuts / A563 Heavy Hex Nuts - Grade DH. A563 Heavy Hex Nuts - Grade DH, ANSI/ASME B18.2.2 Coarse Thread, Hot Dipped Galv . Description ... Coupling Nuts; Nut and Bolt Supply; Fastener Kits; Service & Support.