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