1.Item:DIN127B double coil spring lock washer 2.Finish:galvanized,nickeled,etc., 3.Material:stainless steel,Carbon ... Quantity is ok.SPECIFICATION: Item:DIN127B double coil spring lock washer Size: M6-M22 Material: Carbon steel,stainless steel Standard: ANSI ... provide the excellent after sale service.(7)Company Mission:Quality first, credit as prerequisite, management as this, the service is sincere ...