1.flat washer DIN125 2.Material :Stainless steel, steel, Copper 3.Surface: Zp (CR3+,CR6+),Flat, HDG, Black 4.Size : ... quality competive price.3.material of din125:stainless steel ,carbon steel,spring steel,brass and copper.4.surface treatment:Passivation,Galvanized,dacromet or according ...