We sell the products as follows1.Nuts: Hex nut(DIN934,ISO4032,DIN439,DIN936,ANSI, B 18 2.2), Nylon locking nut(DIN985,DIN982,UNI7474), Flange nylon nut(DIN9626,DIN EN1663), Flange nut(DIN6923,JIS1190,IFI D-21), Square nut(DIN557), Square weld nut(DIN928,JIS1196), Hex weld nut(DIN929), Cap nut(DIN1587,JIS1183,UNI5721), Long nut(DIN6334), Spring..