Spring washer 1)Material: Carbon,stainless steel 2)Size: Un- ... finite 3)Finishing:ZW,ZB,ZY,Nickel, ZP.else 4)Tolerance:0.01 Spring ... washer1)Standards:DIN127A, DIN127B ASME B 18 21.1 BS 18022)Material70# , 65Mn, ... 's requirement.More than ten years' experience in spring washers and other fasteners.Sincerely welcome to contact us ...