1.Name:IFI Hex Coupling Nut Distributor 2.Meterial:Carbon Steel 3.Finish:Zinc plated 4.Size:1/4~6 ... nut;wing nut;2.StandardDIN934,DIN985,DIN315,DIN1587, ISO,JIS& ANSI,GB ,BS,ASTM,Nonstandard nut (according to your order)etc.3.MaterialLow carbon ... steel; medium carbon steel(1035/1045); Alloy carbon steel;stainless steel,etc ...