SPRING NUT Size: M3-M36 Standard: DIN,AISI,JIS Finish: Plain,Z/P,Black H.D.G. SPRING NUT1.Size: M3-M36 2.Standard: DIN,AISI,JIS 3.Finish: Plain,Z/P,Black H.D.G.4.Material:Carbon steel or ss 3045.Package:25kg carton bulk,then pallets6.Delivery:About 30 days after order placed galvanized steel spring nut