... nut:1.Material:stainless steel 304 or 316;or mild carbon steel;2.Surface treament: washing or polished,galvanized,hot dipped and so ... on;3.Stainless Steel 304 or 316 spring nut;(Size: M6,M8,M10,M12,1/4 ... ",5/16",3/8",1/2");4.Competitive price and good quality ... 9.1mm,M12*11.9mm,1/4",3/8",5/16",1/2"; SS304 or SS316 M12(1/2") channel spring nut