Bolt, Nut, Screw manufacturer / supplier in China, offering DIN 934 Galvanized Hex Nut Chinese Manufacturers Exports 4.8 8.8 10.9 Black Oxide Hex Nuts, Screws Hex Head Screw Construction Exterior Self Tapping Bolts Factory Direct Wood Furniture Wood Screw Black M4 - M20, Aluminum Al Flat Head Knurled Body Rivet Nuts and Bolts and so on.