... /Fastener:Stainless Steel 304 or 316 channel spring nut:1.Material:stainless steel 304 or 316;carbon steel;2.Surface ... or 316 spring nut;(Size: 1/4",3/8",5/16",1/2",M6,M8,M10,M12);4.Competitive price and good quality ... you and we will quote you competitive price asap. *Material: carbon steel*Finish: zinc plated, plain or HDG*Delivery ... Certified galvanized spring nut(M6,M8,M10,M12,1/4",3/8",1/2",5/16")