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