... 3)Material:Steel,Stainless steel 4)Finish:Zinc,Black,Nickel Flat Washer 1)Standard:DIN,ANSI,BS ... ,JIS,GB 2)Size:M3-M76 3)Material:Steel,Stainless steel 4 ... )Finish:Zinc,Black,Nickel,Tin Flat Washer1) Standard: DIN, BS, ... , Alloy Steel, Stainless Steel, Brass, Aluminum, etc.4) Finish: Zinc Clear, Zinc Yellow, Black, Nickel-plating ...