The MKT concrete screws BSZ and BSZ2 A4 are now covered by a new European Technical Assessment (ETA) for use in masonry.
The assessments ETA-25/0856 (BSZ) and ETA-25/0854 (BSZ2 A4) confirm the performance and safety of the concrete screws when used in masonry applications. The approved diameter ranges include Ø 5 mm to Ø 10 mm (BSZ) and Ø 6 mm to Ø 10 mm in stainless steel A4 (BSZ2 A4).
With these new ETAs, the application range of the MKT BSZ is significantly expanded. In particular, planners, installers, and distributors benefit from:
– Increased planning reliability through tested and assessed applications in masonry
– Greater flexibility in use thanks to the wide range of diameters and various head types
– Standards-compliant fastening in accordance with current European requirements
The updated ETAs are now available for download.
If you have any questions regarding application or the selection of the appropriate diameter, we will be happy to advise you.
23.03.2026
