Structural Bolts

Tension Control Bolts

Tension control bolts are a specialized fastening system engineered for structural steel connections and provides consistent and reliable tensioning. Each assembly consists of three components: a high-strength bolt with a splined end, a heavy hex nut, and a washer.

During installation, a calibrated electric shear wrench engages both the nut and the splined tip. As torque is applied, the nut is rotated while the bolt is held stationary by the internal socket gripping the spline. Once the precise tension is achieved, the splined end shears off cleanly, ensuring a consistent tension across all connections.

This system simplifies installation, enhances safety, and eliminates the need for torque wrenches or other methods—making it a preferred choice for bridges, buildings, and other infrastructure projects.

Heavy Hex Bolts

Heavy hex bolts are high-strength fasteners designed for demanding structural and industrial applications. Characterized by a larger head size and thicker body compared to standard hex bolts, they offer increased bearing surface and load distribution. This makes them ideal for use in structural buildings or infrastructures where durability, stability, and resistance to extreme conditions—such as high pressure, high temperature, or heavy vibration—are critical.