| Our company specializes in producing various types of fasteners, including standards on GB, DIN, ANSI, JIS, ISO, etc. We also can produce various customized non-standard fasteners. We mainly produce bolts, nuts, washers and metal castings. Bolt grade covers 6.8S, 8.8S, 9.8S, 10.9S, and 12.9S. | High strength steel structure hex bolts, steel structure torque bolts, hex bolts, socket cap screws, foundation bolts, square bolts, T-bolts, sunk screws, fit bolts, railway fish-bolt |