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: 5/16 × 1-1/2 in Thread: UNC 18 TPI Thread length: 7/8 in Width across flats: 1/2 in Head height: 15/64 in Material: Carbon Steel Finish: Hot Dip Galvanized Estimated mass: 18.812 g/pc
ASME B18.2.1 Grade A Hex Bolt Size: 5/16 × 1-1/4 in Thread: UNC 18 TPI Thread length: 7/8 in Width across flats: 1/2 in Head height: 15/64 in Material: Carbon Steel Finish: Hot Dip Galvanized Estimated mass: 16.345 g/pc
