The concrete screw BTS B 8-50/- is optimally suitable for a wide variety of heavy-duty applications in cracked and non-cracked concrete according to the ETA-assessment Option 1. It achieves the highest loads combined with easy mounting (use of an impact wrench is recommended), obtains fire resistance class R 120 for even more safety in case of fire and may even be used to fix fire extinguishing pipe systems to concrete ceilings according to VdS guidelines. The concrete screw is an expansion-force free anchor and is also ideal for temporary fixings as it can be removed completely. Due to the integral washer, no additional washer is required and you save time during installation, while the zinc flake coating ensures higher corrosion resistance.