Hex Lag Screw, Machine Screw, Hex Socket Cap Screw manufacturer / supplier in China, offering DIN6926 Hex Flange Nylon Lock Nuts with Zinc Plated M5-M20, Stainless Steel Pipe CNC Parts Machining Paorts for Custom Accessories, DIN6923 Hex Flange Nut Grade 5 with Zinc Plated and so on.