Flat Washer 1)Standard:DIN,ANSI,BS,JIS,GB 2 ... )Material:Steel,Stainless steel 4)Finish:Zinc,Black,Nickel Flat Washer 1)Standard:DIN,ANSI,BS,JIS,GB 2)Size ... )Material:Steel,Stainless steel 4)Finish:Zinc,Black,Nickel,Tin Flat Washer1) Standard: DIN, BS, IFI, JIS, ISO, ... Alloy Steel, Stainless Steel, Brass, Aluminum, etc.4) Finish: Zinc Clear, Zinc Yellow, Black, Nickel-plating, Tin-plating, Chrome- plating, ...