... ,Stainless steel 4)Finish:Zinc,Black,Nickel SpecificationsSquare Washer 1)Standard:DIN,ANSI,BS,JIS,GB 2)Size:M3-M76 3)Material ... :Zinc,Black,Nickel,TinMetal Square Washer1) Standard: DIN, BS, IFI, JIS, ISO,GB,ANSI,ASME,Non-Standard2) Size: M3–M763) Material ... Galvanizing, Hot-dip Galvanizing.etc.5) Shape: round , square , curved , taper, cup, bowl or according to your request.6) Surface Condition ...