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Concrete screw with countersunk head W-BS/S
Concrete screw with countersunk head W-BS/S - 1
Concrete screw with countersunk head W-BS/S - 2
Concrete screw with countersunk head W-BS/S - 3
Concrete screw with countersunk head W-BS/S - 4
Concrete screw with countersunk head W-BS/S - 5

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Concrete screw with countersunk head W-BS/S

Highest loads and efficient installation. For flush-mount installation of e.g. railings or handrails, zinc-plated steel

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Highest loads and efficient installation. For flush-mount installation of e.g. railings or handrails, zinc-plated steel

  • For anchorage in concrete and masonry

  • Extremely flexible application thanks to up to three effective anchorage depths (size 6-10)

  • Fastening can be adjusted up to two times after installation (size 6-10), for example in order to align railings or anchor plates (please refer to the installation instructions)

  • Very high loads

  • Very low spacing and edge distances thanks to very low expansion effect

  • Very fast and easy installation and immediate load-bearing capacity

  • Attractive, flush-mount installation possible
Proof of Performance

European Technical Assessment ETA-16/0043 for individual fixing point, option 1, cracked and uncracked concrete:


  • Static and quasi-static action (dia. 6-10)

  • Seismic action, performance category C1 (dia. 6-10) and C2 (dia. 8-10)

  • Fire resistance R30, R60, R90, R120


European Technical Assessment ETA-23/0196 for anchorage in masonry


  • Static and quasi-static action (dia. 5-10)

  • Fire resistance R30, R60, R90, R120 (dia. 5-6)


European Technical Assessment ETA-16/0128 for anchors in a redundant non-structural system:


  • Cracked and uncracked concrete, (dia. 5 and dia. 6)

  • Hollow-core prestressed concrete ceilings C30/37-C50/60, (dia. 6)

  • Fire resistance R30, R60, R90, R120


DIBt National technical approval/general type approval Z-21.1-2075 as bonded screw anchor for anchorage in concrete (dia. 10 ), type SK countersunk head


  • Use in combination with WIT-BS injectable mortar as WIT-BS bonded screw anchor

  • In reinforced and non-reinforced and cracked and uncracked concrete C20/25 to C50/60


Fire resistance rating when exposed to fire according to the standard temperature time curve in masonry (Mz, KSL, KS) and reinforced concrete, (dia. 5 and dia. 6) - expert report no 2101/173/18 - 2018

Notice

From size 8, we recommend the use of a suitable tangential impact driver for installation. The recommended maximum nominal torque must be observed. When used in masonry, the stone-specific installation data according to ETA-23/0196 must be observed.

Application area

Railings

Handrails

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 action (dia. 6-10)

  • Seismic action, performance category C1 (dia. 6-10) and C2 (dia. 8-10)

  • Fire resistance R30, R60, R90, R120


European Technical Assessment ETA-23/0196 for anchorage in masonry


  • Static and quasi-static action (dia. 5-10)

  • Fire resistance R30, R60, R90, R120 (dia. 5-6)


European Technical Assessment ETA-16/0128 for anchors in a redundant non-structural system:


  • Cracked and uncracked concrete, (dia. 5 and dia. 6)

  • Hollow-core prestressed concrete ceilings C30/37-C50/60, (dia. 6)

  • Fire resistance R30, R60, R90, R120


DIBt National technical approval/general type approval Z-21.1-2075 as bonded screw anchor for anchorage in concrete (dia. 10 ), type SK countersunk head


  • Use in combination with WIT-BS injectable mortar as WIT-BS bonded screw anchor

  • In reinforced and non-reinforced and cracked and uncracked concrete C20/25 to C50/60


Fire resistance rating when exposed to fire according to the standard temperature time curve in masonry (Mz, KSL, KS) and reinforced concrete, (dia. 5 and dia. 6) - expert report no 2101/173/18 - 2018