Stainless Hex Bolts, Stainless Carriage Bolts, Stainless Lag Screw manufacturer / supplier in China, offering A193 B7 B8 A194 2h 8 12.9 8.8 Grade High Strength Black Coating Double Head Stud Bolt and Nut, ASTM A193 B7 DIN976 Heavy Duty Metric Stud Bolts with ASTM A194 Heavy Hex Nuts, ASTM A193 Gr B8m B7 L7 Automotive Double End Long Threaded Stud Bolts with 2 Heavy Hexagonal Nuts and so on.