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Concrete screw with hexagon head and large disc W-BS/S
Highest load capacities and efficient mounting. Ideal for mounting wood structures (large washer as per DIN 440) in concrete, zinc-plated steel
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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 railings or anchor plates (please refer to the assembly guide)
- Very high loads
- Smallest spacing and edge distance thanks to very low expansion effect
- Very fast and easy assembly and immediately load-bearing
European Technical Assessment ETA-16/0043 for individual fixing point, option 1, cracked and uncracked concrete:
- Static and quasi-static effects
- Seismic exposure, performance categories C1 and C2
- Fire resistance R30, R60, R90, R120
DIBt National technical approval/general type approval Z-21.1-2075 as bonded screw anchor for anchoring in concrete
- Use in combination with injection mortar WIT-BS as bonded screw anchor WIT-BS
- In reinforced and non-reinforced and cracked and uncracked concrete C20/25 to C50/60
From size 8, we recommend the use of a suitable tangential impact screwdriver for installation. The recommended maximum nominal torque must be observed.
Wooden structures
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 individual fixing point, option 1, cracked and uncracked concrete:
- Static and quasi-static effects
- Seismic exposure, performance categories C1 and C2
- Fire resistance R30, R60, R90, R120
DIBt National technical approval/general type approval Z-21.1-2075 as bonded screw anchor for anchoring in concrete
- Use in combination with injection mortar WIT-BS as bonded screw anchor WIT-BS
- In reinforced and non-reinforced and cracked and uncracked concrete C20/25 to C50/60
Individual fixing point with approval:
Normal weight concrete C20/25 to C50/60 (cracked and uncracked concrete)
Especially suitable for fixtures in wooden construction applications in concrete:
- Mounting of e.g. support beams, sleepers, inferior purlins, canopies, wooden substructures, etc.
- Fastenings under seismic conditions in earthquake areas
- Fastenings under exposure to fire
W-BS/S (galvanised steel) may only be used in dry indoor room conditions
For use in concrete < C20/25 and pressure-resistant natural stone (without approval)
Select RAL-colour code
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