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Concrete screw with hexagon head W-BS/A4
Concrete screw with hexagon head W-BS/A4 - 1
Concrete screw with hexagon head W-BS/A4 - 2
Concrete screw with hexagon head W-BS/A4 - 3
Concrete screw with hexagon head W-BS/A4 - 4

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Concrete screw with hexagon head W-BS/A4

Highest load capacities and efficient mounting. Ideal for fastening metal structures in concrete, A4 stainless steel

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Highest load capacities and efficient mounting. Ideal for fastening metal structures in concrete, A4 stainless steel

  • Extremely flexible to use due to three anchorage 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
Proof of Performance

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


  • Static and quasi-static effects (∅6 - ∅10)

  • Seismic effect, performance category C1 (∅6 - ∅10)

  • Fire resistance R30, R60, R90, R120


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


  • Cracked and uncracked concrete, (∅6)

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

  • 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 (∅10, type S hexagon head)


  • 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


Tensile capacity in concrete hollow body ceilings, (∅6 - ∅10) - expert report no. 21641 - 2016



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

Notice

From size 8, we recommend the use of a suitable tangential impact screwdriver for installation. The recommended nominal torque must be observed. When used outdoors, the drill hole can be sealed with WIT-BS injectable mortar.

Application area

Steel supports

Brackets

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 (∅6 - ∅10)

  • Seismic effect, performance category C1 (∅6 - ∅10)

  • Fire resistance R30, R60, R90, R120


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


  • Cracked and uncracked concrete, (∅6)

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

  • 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 (∅10, type S hexagon head)


  • 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


Tensile capacity in concrete hollow body ceilings, (∅6 - ∅10) - expert report no. 21641 - 2016



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