... )Size:M3-M76 3)Finish:Tin,Nickel,Chrome stainless steel lock washer1) Standard: DIN, BS, IFI, JIS, ISO,GB,ANSI,ASME ... , Zinc Yellow, Black, Nickel-plating, Tin-plating, Chrome- plating, Dacromet,Mechanical Galvanizing, Hot-dip Galvanizing.etc.5) Shape: round , square , curved ...