... .Surface:Hot Dipped 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 ... or 316 or carbon steel channel nut;4.Competitive price and good quality;5.OEM service available;6.Size: ... M12*8mm,M12*9.1mm,M12*11.9mm,1/4",3/8",5/16",1/2" )We hope to ... spring nut(M6,M8,M10,M12,1/4",3/8",1/2")