Lock/Spring Washers Standard:ANSI/ASME B18.21.1, DIN127,DIN7980 Surface:black,ZP,plain,..etc Diameter:1/4"-3 1/2", M4-M100 Materials:stainless steel, carbon steel, brass, 65mn, c1070, brass, etc. MOQ:20ton Delivery:30days after order is confirmed Payment:T/T or L/C at sight. Per your demand.
