Tension Control Bolts or TCBs as they are commonly known, are replacing conventional high strength friction grip bolts and swaged collar rivets simply because they are very quick and easy to install using lightweight electrical sear wrenches. Westline are proud to be a Stockist of this high quality product.We stock a full range of TCB's, we offer a very fast delivery service and we can often deliver within 24 hours of an order being received. Westline also have the added benefit of an experienced technical team who can offer technical backup on any project that you might undertake.
High strength TCBs are used in a wide range of applications from bridge splice plates to beam to column connections, from stadia roof trusses to rail switches and crossings. The combination of superior tensile strength together with phenomenal ductility result in a universal bolt that can be employed in almost all steelwork connections
Product Description
TCB’s have a domed head and the threaded section of the bolt is extended to form a wasted portion and a splined end. The TCB assembly is complete with a trough hardened flat washer fitted under the nut. Tightening is achieved with the aid of a shear wrench with a socket that locates on the nut and spline. When the correct shank tension is reached the spline is sheared, giving instant and visible inspection. Although the bolt is properly tightened and is resistant to any subsequent vibration, it can be loosened and removed by conventional methods.
Installation
TCB’s can be installed from either side of the work to accommodate any access limitations. Only a flat washer is used, under the nut, no other load indicating device is required. TCB’s are tightened from one face of the work without the need to hold the bolt head.
20 Advantages of TCB's
Including 10 that will Save you Money
- The lowest cost method for properly installed High Strength Friction Grip and pre-load bolts
- Quick to Install
- Safe and easy to install
- Visual inspection
- Consistent Tension
- One man installation
- Non impacting electric shear wrenches
- No air compressors
- Reduced operator fatigue
- Reduced tool maintenance
- Low on-site/on-track noise levels
- No torque wrenches required
- Light weight wrenches of varying shapes and sizes
- Tensile strength of a grade 10.9 bolt
- Ductility of a grade 8.8 bolt
- Higher grade steel facilitates the use of smaller diameter bolts
- TC Bolts are used in Shear and Tension
- No relaxation in the bolt since no torsional shear is introduced in its shank
- Will not loosen with vibration - no locknut required
- Sheared off spline is retained within the shear wrench to enable safe disposal
