We are professional supplier of square washer and many other fasteners..Welcome to contact us for ... ! Features:Materials: mild steel, carbon steel, 304, 316 stainless steel, brass and copperFinishing: plain, zinc-plated, black, chromate and nickel-platedUsed ... : DIN,ASME/ANSI,BS and JISPacking: according to customers' requirement Square Washer DIN436