... :SS304/SS316;mild steel; 2.Surface:polished;galvanized; 3.Good price and good quality; Metal stamping part/Fastener/channel nut:AISI ... ;(Size: M6,M8,M10,M12,1/4",5/16",3/8",1/2");4.Competitive price and good quality;5.OEM service available ... .1mm,M12*8mm,M12*9.1mm,M12*11.9mm,1/4",3/8",5/16",1/2"; M6(1 ...