... Galvanized; 3.Good price and quality; Metal stamping part/channel nutchannel nut(M6,M8,M10,M12,1/2",1/4",5/16",3/8"): 1.Material:carbon ... steel;2.Surface treament:nickel plating,,zinc plating,galvanized,hot dipped and so on;3 ... from you and we will quote you competitive price asap. hot dipped galvanized spring nut(M6,M8,M10,M12,1/4",3/8",1/2")