... products 2.Standard:DIN,JIS,ANSI 3Material:Carbon steel.Stainless steel Professional supply stainless steel fasteners1.Nuts: Hex nut(DIN934,ISO4032,DIN439,DIN936 ... ), Flange nut(DIN6923,JIS1190,IFI D-21), Square nut(DIN557), Square weld nut(DIN928,JIS1196), Hex weld nut(DIN929 ... most energetic city_Wenzhou.2. We have our own factory to production of fasteners and professionally export fasteners under ...