Fastener, Hex Bolt, Foundation Bolt manufacturer / supplier in China, offering 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, Zinc Plated Grade 8 Carbon Steel Galvanized Hex Self Clinching Nut Insert Press Rivet Nuts and so on.