... nut in dongguan and shenzhenWe can supply various bolts, nuts, washers, and flange nuts.Sizes:1) Nuts: 17mm, 19mm, 21mm, 22mm, 23mm2) Spanners: 17 ... ,milling,grinding,rolling,cold drawing, spinning, forging, etc.MaterialAluminum, copper, brass, stainless steel, steel, iron, alloy, zinc , carbon steel, rubber and ...