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F436 Structural Flat Washer, Zinc CR+3 (Inch)
Our USA‑manufactured F436 Structural Flat Washers with Zinc CR+3 plating are engineered for high‑strength bolted structural connections and heavy‑duty industrial applications. Produced to meet ASTM F436 specifications, these washers provide superior hardness, impact resistance, and durability, making them ideal for use with A325, A490, F1554 anchor bolts, structural bolts, and heavy hex fasteners.
The Zinc CR+3 finish delivers a bright, clean appearance with enhanced corrosion resistance over traditional zinc plating, providing longer service life in indoor and moderately exposed environments. These hardened structural washers help distribute load evenly, minimize embedment losses, and maintain joint integrity in critical bolted assemblies such as steel buildings, bridges, industrial equipment, and infrastructure systems.
Proudly Made in the USA, our F436 Structural Flat Washers offer precise dimensional accuracy, uniform hardness, and consistent performance required for structural steel bolting. Their trivalent zinc plating adds corrosion protection without hydrogen embrittlement risks, making them suitable for demanding construction and industrial applications. Available in multiple sizes, these washers pair seamlessly with high‑strength bolts and nuts to ensure secure, code‑compliant fastening.
