TT BOLT is a manufacturer and supplier of industrial fasteners, specializing in high-quality bolts, nuts, washers and custom fastening solutions.
Our products are manufactured according to international standards including DIN, ISO, ASTM and ASME, serving industries such as construction, oil & gas, petrochemical, mining, power generation, heavy machinery and infrastructure projects.
ASME B18.2.1 Grade A Hex Bolt Size: 1/2 × 3 in Thread: UNC 13 TPI Thread length: 1-1/4 in Width across flats: 3/4 in Head height: 23/64 in Material: Carbon Steel Finish: Hot Dip Galvanized Estimated mass: 90.309 g/pc
ASME B18.2.1 Grade A Hex Bolt Size: 1/2 × 3-1/2 in Thread: UNC 13 TPI Thread length: 1-1/4 in Width across flats: 3/4 in Head height: 23/64 in Material: Carbon Steel Finish: Hot Dip Galvanized Estimated mass: 102.938 g/pc
ASME B18.2.1 Grade A Hex Bolt Size: 1/2 × 4 in Thread: UNC 13 TPI Thread length: 1-1/4 in Width across flats: 3/4 in Head height: 23/64 in Material: Carbon Steel Finish: Hot Dip Galvanized Estimated mass: 115.567 g/pc