Quality Washers
washer 1.Standard:DIN, USS, NFE, BS, AS, SAE, Non-standard 2.Material:304/ 316(A2 or A4) Stainless Steel, low carbon steel, 45#, 50#, 65Mn.Brass/ Copper etc. 3.Surface treatment:Plain/ Polished, Galvanized Zinc(BLUE, YELLOW, WHITE), H.D.G, Black, ...