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Grade C Heavy Hex Nut, A563, Plain (Inch)
Heavy Hex Nuts A563 Grade C Plain are high-strength carbon steel fasteners designed for structural and industrial applications requiring reliable load-bearing capability. Manufactured to ASTM A563 Grade C specifications, these heavy hex nuts feature a thicker body and larger wrenching flats than standard hex nuts, ensuring secure engagement and optimal torque transmission. The plain (uncoated) finish provides a natural steel surface suitable for controlled environments or for post-treatment coatings such as galvanizing or plating.
A563 Grade C Heavy Hex Nuts are typically used with high-strength bolts such as ASTM A325 and A490 in steel construction, bridges, and heavy machinery. Heat-treated for enhanced strength and durability, these nuts deliver dependable performance under high-stress conditions. The plain finish makes them ideal for applications where corrosion protection is applied later or not required.
