CNC Machining Parts, Metal Stamping, Casting Parts manufacturer / supplier in China, offering DIN931 M6 Bouten Tuerca Y Perno Stainless Steel Boulon Hexagon Hex Bolts, DIN653 M4 Low Type Stainless Steel 316 304 Flat Knurled Thumb Machine Screw, M8-M16 DIN933 Hexagonal Flat Galvanized 4.8 8.8 Grade Steel Bolt Hex Flange Bolt and so on.