Fastener, Hex Bolt, Foundation Bolt manufacturer / supplier in China, offering M12 Galvanized Hex Head Lag Screws for Wood Zinc Plated Full Thread Half Thread Self Tapping Screw DIN571 Coach Screw 30mm, Carbon Steel 4.8 8.8 10.9 12.9 Grade Zinc Plated Hook J Eye Bolt Concrete Bending Expansion Bolt Sleeve Anchor Bolt, High Precision Custom Metric Thread M3 M4 M6 M8 M10 Copper Brass Hex Nuts and so on.