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Grade Dh Heavy Hex Nut, A563, Hot-Dip Galvanization/Wax&Blue Dye (Inch)
Heavy Hex Nuts A563 Grade DH Hot-Dip Galvanized with Wax & Blue Dye are high-strength structural fasteners designed for maximum performance and corrosion resistance in demanding environments. Manufactured to ASTM A563 Grade DH specifications, these nuts are made from heat-treated carbon or alloy steel and feature a heavy hex design for increased load-bearing capacity and wrenching strength. The hot-dip galvanization provides a thick zinc coating for long-term rust protection, while the wax and blue dye treatment improve lubricity, reduce friction during assembly, and ensure easy visual identification.
A563 Grade DH Heavy Hex Nuts with Hot-Dip Galvanized and Wax & Blue Dye finish are commonly used with high-strength structural bolts such as ASTM A325 and A490 in bridge, building, and heavy construction applications. The wax coating ensures consistent torque-tension performance, while the blue dye aids in quality inspection and differentiation. Engineered for reliability, strength, and corrosion protection, these nuts meet ASTM and AISC requirements for structural steel connections in outdoor and marine environments.
