Tension Control Bolts

Tension Control Bolts

Konnect Fastening Systems brings you Tension Control Bolts and the innovative Shear Wrench system are the lowest cost method for installing preloaded or High Strength Friction Grip (HSFG) bolts.

TCBs as they are commonly known throughout the world, are replacing conventional high strength friction grip bolts and swaged collar rivets simply because they are quick and easy to install using lightweight electric shear wrenches. Guaranteed tension together with visual inspection removes the likelihood of operator error and ensures engineers that connections are tightened in accordance with specifications.

Our System HRC structural bolting assemblies 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 a TCBs superior tensile strength and phenomenal ductility result in a truly universal bolt that can be employed in almost all steelwork connections.

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Tension Control Bolts Ltd operates a quality management system in accordance with BS EN ISO 9001:2015 and NHSS 3, maintaining full traceability of our products from their initial source of supply through to despatch to the customer.

Quality is at the forefront of everything we do, and we are proud of the outstanding reputation we have created over the last 30 years whilst becoming the market leader in tension control bolting.

To ensure our products conform to all relevant standards and specifications, TCB operate specialist in-house testing equipment including:

  • Neutral salt spray (NSS) corrosion testing in accordance with ISO 9227
  • Tensile testing to ISO 898-1
  • Nut proof load testing to ISO 898-2
  • Suitability for preloading to EN 14399-2
  • Suitability test for calibrated preload to EN 14399-10
  • Hardness testing to ISO 6508-1
  • Tri-Roll Thread Comparators
  • DoP to EN 14399-1 2015