Content with HR

12 January 2022
We understand the difficulties by the end-users and purchasing departments in choosing the right components for different installation methods of High-strength structural bolting assemblies for preloading (HR) . Different installation methods and product grades may require additional components like DTI washers , hardened washers, bolt face or nut face washers. Sometimes, the number and type of component change, depending on which part is rotated (the nut or the bolt head).
Read more about Configurator for BS EN 14399 High-strength structural bolting assemblies for preloading (HR)

12 December 2015
Andrews Fasteners Bolt Length Calculator for BS EN 14399 High-strength structural bolting assemblies for preloading (HR) HR Bolt to EN 14399-3:2015 / HR Countersunk bolt EN 14399-7:2018 This calculator is for guidance only and is used for calculating the minimum recommended bolt length based on maximum allowed thickness of the assembly components and the steelwork. This information is provided in good faith and is for your guidance only. Andrews Fasteners Limited can not accept any liability for actions taken by third parties based on this information.
Read more about Bolt Length Calculator for HR Bolts and HR Countersunk Bolts (EN 14399-3/7)

07 December 2015
Maximum bolt length = 300 mm The values produced on this calculator are for information purpose only. They are calculated using formulas stated in relevant standard and are provided in good faith and for your guidance only. Andrews Fasteners Limited can not accept any liability for actions taken by third parties based on this information. Bolt diameter M Length X Calculate Reset form Thread b (ref.): Minimum thread (full thread): Maximum thread inc.
Read more about Thread Length Calculator for Countersunk High-Strength Structural Bolts to BS EN 14399-7 (HR CSK)

06 December 2015
Maximum bolt length = 300 mm The values produced on this calculator are for information purposes only. They are calculated using formulas stated in the relevant standards and are provided in good faith and for guidance only. Andrews Fasteners Limited can not accept any liability for actions taken by third parties based on this informations. Bolt diameter M Length X Calculate Reset form Thread b (ref.): Minimum thread (full thread): Maximum thread inc.
Read more about Thread Length Calculator for Hexagon High-Strength Structural Bolts to BS EN 14399-3 (HR)

27 April 2015
We are pleased to announce, that on** 23rd of March 2015** Andrews Fasteners Limited have been reassessed to EN 15048 non-preloaded assemblies and EN 14399 preloaded assemblies Countersunk HR On 20th of April 2015 Andrews Fasteners Limited have had our approval extended to offer EN 14399 countersunk preloaded assemblies (EN 14399-7). As a result of the reassessment and the change to our approval, on 27th of April 2015 notified body Lloyd’s Register LRQA have issued new certificates for EN 15048 and EN 14399.
Read more about EN 15048 / EN 14399 re-assessment and new approval (HR CSK)

25 August 2014
BS EN 14399-3 Hexagon bolting assemblies for preloading (HR) Previously known as High Strength Friction Grip (HSFG) We are a manufacturer of UKCA & CE Marked pre-loaded fasteners to BS EN 14399. In our facility in Leeds, we can UKCA & CE Approve – assembly test to BS EN 14399-2 HR Assemblies from M12 to M36 up to grade 10.9. We are regularly independently assessed by Lloyd’s Register / LRQA, to make sure, that our company is fully compliant with BS EN 14399 requirements.
Read more about BS EN 14399 High-strength structural bolting assemblies for preloading (CE & UKCA Marked)

21 August 2014
CE Mark CE Marking is a mark affixed by the manufacturer who declares that its product meets the essential requirements for relevant European Regulations. For fasteners, it is Construction Products Regulation (CPR), that become mandatory law in all EU member states including the UK and RoI from the 1st of July 2013. This document is the base for CE marking of fasteners. This European regulation replaced the Construction Products Directive (CPD) and affects all construction products covered by a harmonised standard or ETA (European Technical Assessment) .
Read more about CE & UKCA Marking - CE & UKCA Marked Fasteners