SEMS SCREW steel socket head sems screw with flat washer-full thread, Black
SEMS SCREW, Flat washer-full thread-Black
Steel socket head sems screw with flat washer
Material: carbon steel, stainless steel, alloy steel, copper, aluminum and other materials Hardness: specified according to the customer's drawing. Surface treatment:black, black zinc, nickel plating, galvanizing, etc., according to customer needs.