Screw, Bolts, Nuts manufacturer / supplier in China, offering Anti-Slip Flange Bolt with 16 Anti-Vibration Teeth - Green Steel, High-Strength for Heavy Machinery ISO/CE/RoHS Certified, DIN931- Grade 8.8/12.9/10.9/Stainless Steel/Carbon Steel Fastener Structural Bolt for Heavy-Duty Connections, High-Strength DIN 934 Hex Nut - Grade 10.9/12.9 Carbon Steel, M8-M30 for Heavy Machinery/Automotive Zinc Plated, Anti-Corrosion and so on.