... the specification of our Hex Coupling Nut? 1.NameDIN 6334 Galvanized Hex Coupling Nut Manufacturer2.standardDIN 63343.MaterialCarbon Steel, ... can we supply? 1.NameHex Nut;Square Nut;Nylon lock nut; hexagan domed cap nut; butterfly 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; ...