... part/Fastener/channel nut:Stainless Steel 304 or 316 channel spring 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/ ... M12*11.9mm,1/4",3/8",5/16",1/2"; SS304 or SS316 M12(1/2") channel spring nut