CNC Machining Parts, Metal Stamping, Casting Parts manufacturer / supplier in China, offering High Quality Carbon Steel Black DIN934 Hex Nut Hexagon Nuts, DIN985 Hex Nylon Insert Nut Self Lock Nut DIN 985 4.8 8.8 10.9 12.9 M24 M30 M36 M42 M48 HDG Hot DIP Galvanized, DIN933 Screw Stainless Steel Hex Head Screw Bolt and so on.