... or 316 spring nut;(Size: 1/4",3/8",5/16",1/2",M6,M8,M10,M12);4.Competitive price and good quality;5.OEM service ... from you and we will quote you competitive price asap. *Material: carbon steel*Finish: zinc plated, plain or HDG*Delivery in time ... *Always competitive pricing*ISO9001:2000 Certified galvanized spring nut(M6,M8,M10,M12,1/4",3/8",1/2",5 ...