... Zinc,Black,Nickel,Tin SpecificationsFlat Washer 1)Standard:DIN,ANSI,BS,JIS,GB 2)Size:M3-M76 3)Material:Steel,Stainless steel ... Nickel,TinFlat Washer1) Standard: DIN, BS, IFI, JIS, ISO,GB,ANSI,ASME,Non-Standard2) Size: M3–M763) Material: Carbon Steel, Alloy Steel ... Dacromet,Mechanical Galvanizing, Hot-dip Galvanizing.etc.5) Shape: round , square , curved , taper, cup, bowl or according to your request.6 ...