3/8" Flat Washer, K500 Hardened Steel

Manufactured from K500 hardened steel, this 3/8" flat washer is designed for high‑strength structural and heavy‑duty fastening applications. The hardened construction helps distribute load evenly, protect mating surfaces, and maintain clamp force under high tension. Commonly used with structural bolts in construction, industrial, and infrastructure projects where strength and durability are critical.