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Concrete screw with pan head W-BS/A4
Ideal for fastening mounting rails, panel materials or fire-protection panels in concrete, A4 stainless steel
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Variants
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- Extremely flexible to use due to three anchoring depths
- Fastening can be adjusted up to twice after installation, for example in order to align anchor plates or rails (please refer to the assembly guide)
- High loads
- Smallest axial and edge clearance due to very low expansion effect
- Very fast and easy assembly and immediately load-bearing
European Technical Assessment ETA-16/0043 for fixing point, option 1, cracked and non-cracked concrete:
- Static and quasi-static effects (∅6)
- Seismic effect, performance category C1 (∅6)
- Fire resistance R30, R60, R90, R120
European Technical Assessment ETA-16/0128 for anchors in a redundant non-structural system:
- Cracked and non-cracked concrete, (∅6)
- Hollow-core prestressed concrete ceilings C30/37 - C50/60, (∅6)
- Fire resistance R30, R60, R90, R120
Fire resistance rating when exposed to fire according to the uniform temperature time curve in masonry (Mz, KSL, KS), and reinforced concrete, (∅6) - expert report no. 2101/173/18 - 2018
When installing with a tangential impact screwdriver, the recommended maximum rated torque must be observed. When used outdoors, the drill hole can be sealed with WIT-BS injectable mortar.
Adjustment - subsequent aligning possible
Create the drill hole
Clean the drill hole
Place screw
Screw in the screw
Considered installed when the head is close fitting
Screw out the screw max. 2x each by max. 10 mm. Underlay. Screw in
Considered installed when the head is close fitting. Lining max. 10 mm. The required embedment depth must be maintained as a minimum
Locate the tensioning strand
Mark the tensioning strand and locate the next one
Mark the tensioning strands. Specify the drilling range
Create the drill hole. Observe spacing
Clean the drill hole
Screw in the screw
Considered installed when the head is close fitting. Observe the embedment depth/mirror thickness
European Technical Assessment ETA-16/0043 for fixing point, option 1, cracked and non-cracked concrete:
- Static and quasi-static effects (∅6)
- Seismic effect, performance category C1 (∅6)
- Fire resistance R30, R60, R90, R120
European Technical Assessment ETA-16/0128 for anchors in a redundant non-structural system:
- Cracked and non-cracked concrete, (∅6)
- Hollow-core prestressed concrete ceilings C30/37 - C50/60, (∅6)
- Fire resistance R30, R60, R90, R120
Fire resistance rating when exposed to fire according to the uniform temperature time curve in masonry (Mz, KSL, KS), and reinforced concrete, (∅6) - expert report no. 2101/173/18 - 2018
Fixing point with approval (∅6):
In normal weight concrete C20/25 to C50/60 (cracked and non-cracked concrete)
Anchors in a redundant non-structural system with approval:
- In normal weight concrete C20/25 to C50/60 (cracked and non-cracked concrete), (∅6)
- In hollow-core prestressed concrete ceilings C30/37 - C50/60, (∅6)
Pan head with attractive head geometry, ideally suited for fastening medium loads in concrete:
- Fastening of e.g. mounting rails, panels, sheets, fire protection panels, handrails, metal profiles, brackets, wooden substructures etc. in in-place installation
- Fastenings under seismic conditions in earthquake areas
- Fastenings under exposure to fire
For use in concrete < C20/25 and pressure-resistant natural stone (without approval)
W-BS/A4 (stainless steel A4) can be used in dry indoor conditions, outdoors (including in industrial atmospheres and coastal areas) or in wet rooms, provided that no particularly aggressive conditions are present
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