GB 27 Hexagonal head bolt for hinged holes

GB 70 Hexagon socket head screws

GB 798 Union bolts (rough)

GB 799 Anchor bolts (rough)

GB 897, GB 898, GB 899, GB 900 double head bolts

GB 901 Equal length double headed bolts GB 953 Equal length double headed bolts (rough)

GB 5780 Hexagonal head bolts - Grade C

GB 5781 Hexagonal head bolts - Full thread - Class C

GB 5782 Hexagonal head bolts - Grade A and B

GB 5783 Hexagonal head bolts - Full thread - Grades A and B

GB 5784 Hexagonal head Bolts - Thin Rod - Grade B

GB 5785 Hexagonal head bolts - Grade A and B

GB 5786 Hexagonal head bolts - Fine thread - Full thread - Grades A and B

GB 5787 Hexagonal flange bolts - Class B

GB 5788 Hexagon flange bolts - Thin rods - Class B

GB 5789 Hexagon flange bolts - Enlarged series - Class B

GB 5790 Hexagon flange bolts - Enlarged series - thin rod - Class B

GB 1228 Large hexagonal head bolt (high strength for steel structures)