... 3.Good price and quality Detailed Product DescriptionMetal stamping part/Fastener:Stainless Steel 304 or 316 channel spring nut:1.Material ... nut;(Size: 1/4",3/8",5/16",1/2",M6,M8,M10,M12);4.Competitive price and good quality;5.OEM ... time *Always competitive pricing*ISO9001:2000 Certified galvanized spring nut(M6,M8,M10,M12,1/4",3/8",1/2",5/16")