CNC Machining Parts, Metal Stamping, Casting Parts manufacturer / supplier in China, offering Fasteners DIN912 M2 M3 M4 M8 Carbon Steel Zinc Bolt Hexagonal Hex Socket Countersunk Screw, DIN931 M6 Bouten Tuerca Y Perno Stainless Steel Boulon Hexagon Hex Bolts, Stainless Steel 304 316 316L DIN931 DIN 933 1/6 Nuts Grade 8.8 Hexagon Head Bolts Ss Bolts and so on.