Frequently Asked Questions (FAQ)
BS EN 14399 High-strength structural bolting assemblies for preloading
- Do I need Bolt Face Washer or Nut Face Washer (EN 14399-9) with DTI's?
- Can Preload bolt assemblies (HSFG) be used on painted or galvanised surfaces?
- What is the minimum thread length on preload bolts?
- Are two threads protruding through a preload fastener enough?
- Can Preload (HSFG) assemblies be de-assembled once they have been assembled?
- Should higher grade nuts be specified for use with galvanized or sherardized set screws and bolts on CE (UKCA) approved assemblies?
- What does the HR & HV symbols mean?
- What is the difference between HR and HV bolt assemblies?
- Should preloaded assemblies be assembled with lubrication?
BS EN 15048 Non-preloaded structural bolting assemblies
- Tightening of non-preloaded bolts
- Should higher grade nuts be specified for use with galvanized or sherardized set screws and bolts on CE (UKCA) approved assemblies?
CE & UKCA Marking
- Can holding down bolts (foundation bolts) be CE (UKCA) marked?
- What is DOP?
- Can bags be split and then re-labelled as CE (UKCA) approved?
- Do bags/boxes have to have CE (UKCA) labels on them?
- Can product to DIN standard be CE (UKCA) Marked?
- What type of products can be CE (UKCA) marked?
Coating
Installation
- Do I need Bolt Face Washer or Nut Face Washer (EN 14399-9) with DTI's?
- What is a single lap joint according to EN 1993-1-8:2005, 3.6.1.?
Packing
- Which identification mark is used by Andrews Fasteners?
- Can bags be split and then re-labelled as CE (UKCA) approved?
- Do bags/boxes have to have CE (UKCA) labels on them?
Steel
- What is the difference between J2 and JR? Can they be used as substitutes for each other?
- What does the term "Secondary Steelwork" mean?
- Is steel construction sustainable?
- Is steel recyclable?
Test Certificates
- Can Andrews Fasteners offer 3.2 certification?
- Why is there no elongation, impact, reduction of the area on some of the Test Certificates?
If your queries have not been answered, please contact Andrews Fasteners Quality Department and we will try to help.