Expert Guides

A Comprehensive Guide to Protective Coatings for Fixings Blindbolt UK | 20th December 2023 In common with many other manufacturers, BlindBolt fixings can be specified in different materials and with alternative coatings to suit different exposure conditions. This article offers advice on the suitability of BlindBolt materials and protective coatings for different corrosion conditions.  BlindBolt…

Can BlindBolts be Used as Preloaded Fixings? Blindbolt UK | 16th November 2023 Preloaded Fixings Preloaded fixings are used in non-slip connections. Although the fixings are installed in clearance holes (usually 2 mm larger than the bolt diameter), the bolts are preloaded so that the shear load is transferred by friction between the clamped plates,…

BlindBolt Tightening Torques Blindbolt UK | 19th October 2023 What is Torque? Torque is a measure of force that can cause an object to rotate about an axis. In SI units torque is measured in newton meters, or Nm. If a fixing is tightened by a force of 90 N applied at the end of…

BlindBolts subject to combined shear and tension Blindbolt UK | 8th September 2023 It may seem strange that fixings which are fully loaded in shear can actually also carry tension at the same time, and vice versa, but this is a fact proved by tests and acknowledged by design standards. BlindBolts have been shown by…

The Advantages of Using Steel in Construction Blindbolt UK | 24th August 2022 In the UK, around 70% of multi-storey frames are constructed in steel. In single storey structures, steel accounts for around 90% of the market. This article explores the reasons why steel is the preferred choice. Steel Can be Recycled or Reused  In…

The Effect of Packs in Bolted Connections Blindbolt UK | 17th July 2023 In this article we discuss the effects of packs in bolted connections. Load transfer BlindBolts and HD Bolts are used as non-preloaded fixings, described as “Category A” in BS EN 1993‑1‑8. This means that shear across a connection is transferred in shear within the…