ASTM A325 TC structural bolts are high-strength bolts commonly used in structural steel connections. These bolts are made from medium carbon steel and are heat-treated to achieve a minimum tensile strength of 120 ksi.The "TC" designation stands for "Tension Control," which refers to a unique installation method for these bolts. Tension control bolts have a spline or ribbed section under the head that shears off when the proper tension is achieved, ensuring consistent high strength flange bolt and accurate installation.ASTM A325 TC bolts have a heavy hexagonal head and a shank with threads on one end. They are typically used in structural applications such as steel buildings, bridges, and other heavy construction projects. These bolts are designed to provide a secure and reliable connection, high strength fasteners with high resistance to shear and tension forces.When using ASTM A325 TC structural bolts, high strength screws it is important to follow the manufacturer's installati…