Description

Specification
High working loads and easy installation. The new generation of concrete screws in A4 stainless steel. For flush mounting of e.g. staircase railings or handrails in concrete | The new thread geometry ensures smooth screwing into the concrete and thus greater efficiency

The fastest type of fastening for medium and heavy loads

Three effective anchorage depths allow flexible application

Attachments can be adjusted up to twice retrospectively, for example to be able to align staircase railings or anchor plates (observe installation instructions)

Minimum spacing and edge distances due to very low expansion effect

Attractive, flush-mount installation possible | The new thread geometry ensures smooth screwing into the concrete and thus greater efficiency | The fastest type of fastening for medium and heavy loads | Three effective anchorage depths allow flexible application | Attachments can be adjusted up to twice retrospectively, for example to be able to align staircase railings or anchor plates (observe installation instructions) | Minimum spacing and edge distances due to very low expansion effect | Attractive, flush-mount installation possible | Proof of Performance | European technical assessment ETA-22/0123 for fixing point option 1, cracked and non-cracked concrete: | Static and quasi-static effects (∅6 – ∅10)

Seismic effect, performance category C1 (∅6 – ∅10)

Fire resistance R30, R60, R90, R120 | Static and quasi-static effects (∅6 – ∅10) | Seismic effect, performance category C1 (∅6 – ∅10) | Fire resistance R30, R60, R90, R120 | 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 | Railings
Handrails
Adjustment – subsequent aligning possible | Railings | Railings | Railings | Handrails | Handrails | Handrails | Adjustment – subsequent aligning possible | Adjustment – subsequent aligning possible | Adjustment – subsequent aligning possible | Create the drill hole
Place screw
Screw in the screw
Considered installed when the head is close fitting | Create the drill hole | Create the drill hole | Create the drill hole | Place screw | Place screw | Place screw | Screw in the screw | Screw in the screw | Screw in the screw | Considered installed when the head is close fitting | Considered installed when the head is close fitting | 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 | Screw out the screw max. 2x each by max. 10 mm. Underlay. Screw in | Screw out the screw max. 2x each by max. 10 mm. Underlay. Screw in | 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 | Considered installed when the head is close fitting. Lining max. 10 mm. The required embedment depth must be maintained as a minimum | Considered installed when the head is close fitting. Lining max. 10 mm. The required embedment depth must be maintained as a minimum | European technical assessment ETA-22/0123 for fixing point option 1, cracked and non-cracked concrete: | Static and quasi-static effects (∅6 – ∅10)

Seismic effect, performance category C1 (∅6 – ∅10)

Fire resistance R30, R60, R90, R120 | Static and quasi-static effects (∅6 – ∅10) | Seismic effect, performance category C1 (∅6 – ∅10) | Fire resistance R30, R60, R90, R120
Application
Application area | Fixing point with approval (∅6 – ∅10): | In normal weight concrete C20/25 to C50/60 (cracked and non-cracked concrete) | Specifically designed for attractive flush-mounting | Suitable for mounting medium to heavy loads in concrete: | Attachment of e.g. staircase railings and balcony balustrades, handrails, steel constructions, wooden substructures, metal profiles etc. in in-place installation

Mounting under seismic conditions in earthquake areas

Mounting in areas under exposure to fire | Attachment of e.g. staircase railings and balcony balustrades, handrails, steel constructions, wooden substructures, metal profiles etc. in in-place installation | Mounting under seismic conditions in earthquake areas | Mounting in areas under exposure to fire | W-BS 2/A4 (A4 stainless steel) can be used in dry indoor conditions, outdoors (including in industrial atmospheres and close to the sea) or in wet rooms, provided that no particularly aggressive conditions are present | For use in concrete < C20/25 and pressure-resistant natural stone (without approval) Tehnical Information
Anchor size: 10 mm | Anchor length (l): 120 mm | Attachment height (t fix 1): 65 mm | Attachment height (t fix 2): 45 mm | Attachment height (t fix 3): 35 mm | Thread diameter: 12 mm | Nominal drill-bit diameter (d 0): 10 mm | Drill hole depth (h 1.1): 65 mm | Drill hole depth (h 1.2): 85 mm | Drill hole depth (h 1.3): 95 mm | Embedding depth (h nom1): 55 mm | Embedding depth (h nom2): 75 mm | Embedding depth (h nom3): 85 mm | Head diameter (d sk): 22 mm | Internal drive: TX50 | Head type: Countersunk head | Material: Stainless steel A4 | Through-hole in the component to be connected (d f): 14 mm | Surface: Plain | Head diameter: 22 mm