Production range:DIN125,126,127,137,433,434, 435, 436, 440, 1440, 7349, 7989, 7980, 9021, 6797A,6797J,6798A,6798J,,6916,AS1237, SAE, USS,BS, NF25513, ASTM-F436, spring washers, Fender washers, lock washer,An960,An970series washer, on-standard washers, stamping products

Surface:

Zinc Plated(Blue&white,Black,Yellow,Colorful)

Material

Low-carbon and mid-carbon steel, Stainless steel A2(304) A4(316)