The Heavy Hex Structural Bolts Factory specializes in producing high-strength bolts compliant with ASTM A325 and ASTM A490 standards. These bolts are hot-forged and come with one hexagon nut. Available in sizes from M10 to M100 and 3/8 to 4 inches in diameter, they are offered in lengths ranging from 25 to 1200 mm (100 to 3660 mm).