CNC Machined Part, Bolts, Screws manufacturer / supplier in China, offering DIN 912-1983/JIS B 1176-1988/GB/T 70.1/ANSI B 18.3.1 M Hole on Head Blue-Zinc Plated Hexagon Socket Head Cap Screw, OEM & Small Orders Welcome, Copper Marginal Serration Precision Stamping Part, OEM and Small Orders Accepted, DIN 16903 Stainless Steel Hole Through Hexagon Head Barrel Nut and so on.