Concrete Screw BSZ / BSZ2-A4 / BSZ-B_A4



Option 1 approved concrete screw BSZ cut a positive thread in the concrete when being screwed in and enable attachment to be made close to the edge through the expansion-free operating principle (=undercut). The approved adjustment enables subsequent alignment to compensate for unevenness. The concrete screw BSZ is also ideal for temporary fixings since it is fully removable. Installation with an impact screwdriver means that you do not need to use a torque wrench. It is quick, reliable and reduces assembly errors. The concrete screw BSZs are available with connection thread and with a range of different head shapes for a wide variety of applications.

– European Technical Assessment for anchoring in cracked and uncracked concrete (Option 1) for concrete screws in sizes 6, 8, 10, 12 and 14
– With up to 3 embedment depths, it is versatile for high loads or low levels of drilling and installation effort
– European Technical Assessment for redundant non-structural systems in concrete and precast pre-stressed hollow core slabs for concrete screws in sizes 5 and 6
– Approved for use under seismic conditions of category C12) and C22)
– By using the Filling Washer VS3), the permissible loads under seismic action C1 and C2 can be further increased
– Approved for use under fire exposure (R30-R120)
– General design approval for temporary fastenings (BSZ-SU: Ø10-Ø14)
– Small drill hole diameter, small edge and axial gap

– Rapid push-through installation with an impact screwdriver without torque regulation
– No curing times, can be loaded immediately
– Adjustable to compensate for unevenness (Ø8- Ø14 mm)
– Can be fully removed
– Wide range of possible applications through numerous variants
– Visually appealing through different head shapes
– Without assessment, can also be used in compression-resistant natural stone, various solid bricks and green concrete

To anchor moderate to heavy loads in cracked and uncracked concrete: Railings and handrails, shelves, wooden beams, supports and braces, brackets, pipeline and cable routes, suspended ceilings, etc. Temporary fastening of construction site facilities, such as props, fall protection and scaffolding.


For specifications, please click the link below:

Concrete Screw BSZ_pdf



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Last Update: November 24, 2021