Concrete screw W-BS/S type ST-6 as a stair bolt With connecting thread
Concrete screw W-BS steel zinc plated type ST
ANC-(W-BS/ST)-(A2K)-WS10-M8X16-60-6X95
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- For anchorage in concrete and masonry
- Extremely flexible application thanks to up to three effective anchorage depths
- With metric connection thread for direct fastening of e.g. pipe clamps
- High loads
- Very low spacing and edge distances thanks to very low expansion effect
- Very fast and easy installation, particularly overhead, and immediate load-bearing capacity
- Fastening can be adjusted up to two times after installation (please refer to the installation instructions)
European Technical Assessment ETA-16/0043 for individual fixing point, option 1, cracked and uncracked concrete:
- Static and quasi-static action (dia. 6)
- Seismic action, performance category C1 (dia. 6, tension load only)
- Fire resistance R30, R60, R90, R120
European Technical Assessment ETA-23/0196 for anchorage in masonry
- Static and quasi-static action (dia. 6)
- Fire resistance R30, R60, R90, R120 (dia. 6)
European Technical Assessment ETA-16/0128 for anchors in a redundant non-structural system:
- Cracked and uncracked concrete, (dia. 6)
- Hollow-core prestressed concrete ceilings C30/37-C50/60, (dia. 6)
- Fire resistance R30, R60, R90, R120
Fire resistance rating when exposed to fire according to the standard temperature time curve in masonry (Mz, KSL, KS) - expert report no 2101/173/18 - 2018
When installing with a tangential impact driver, the recommended maximum nominal torque must be observed. The maximum installation torque specified must be observed when installing the fixtures. When used in masonry, the stone-specific installation data according to ETA-23/0196 must be observed.
Adjustment - subsequent aligning possible
European Technical Assessment ETA-16/0043 for individual fixing point, option 1, cracked and uncracked concrete:
- Static and quasi-static action (dia. 6)
- Seismic action, performance category C1 (dia. 6, tension load only)
- Fire resistance R30, R60, R90, R120
European Technical Assessment ETA-23/0196 for anchorage in masonry
- Static and quasi-static action (dia. 6)
- Fire resistance R30, R60, R90, R120 (dia. 6)
European Technical Assessment ETA-16/0128 for anchors in a redundant non-structural system:
- Cracked and uncracked concrete, (dia. 6)
- Hollow-core prestressed concrete ceilings C30/37-C50/60, (dia. 6)
- Fire resistance R30, R60, R90, R120
Fire resistance rating when exposed to fire according to the standard temperature time curve in masonry (Mz, KSL, KS) - expert report no 2101/173/18 - 2018
Datasheets(X)
CAD data (available after login)
Anchorages in concrete, individual fixing point with approval (dia. 6)
In normal weight concrete C20/25 to C50/60 (cracked and uncracked concrete)
Anchors in a redundant non-structural system in concrete, with approval:
- In normal weight concrete C20/25 to C50/60 (cracked and uncracked concrete, (dia. 6))
- In hollow-core prestressed concrete ceilings C30/37-C50/60, (dia. 6)
Anchorages in masonry with approval (dia. 6):
- In solid calcium silicate block and perforated block
- In solid block masonry brick
With metric connection thread, therefore a highly efficient fastening solution in concrete for numerous applications involving technical building equipment such as in sanitary, air-conditioning and electrical installations or for fixtures that need to be removable
Ideal for fastening medium loads in concrete and light to medium loads in masonry:
- E.g. for fastening pipes, ventilation ducts, cable clamps, suspensions with threaded rods, mounting rails, brackets, metal profiles, brackets for façade or ceiling substructures in pre-positioned installation
- Fastenings subject to seismic activity in earthquake-prone areas (only concrete)
- Fastenings subject to 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)
Anchor size | 6 mm |
Anchor length (l) | 95 mm |
Connection thread | M8 x 16 |
Attachment height (t fix 1) | 60 mm |
Attachment height (t fix 2) | 55 mm |
Attachment height (t fix 3) | 40 mm |
Thread diameter | 7.5 mm |
Nominal drill-bit diameter (d 0) | 6.0 mm |
Drill hole depth (h 1.1) | 40 mm |
Drill hole depth (h 1.2) | 45 mm |
Drill hole depth (h 1.3) | 60 mm |
Embedding depth (h nom1) | 35 mm |
Embedding depth (h nom2) | 40 mm |
Embedding depth (h nom3) | 55 mm |
External drive | WS10 |
Material | Steel |
Surface | Zinc plated |
Through-hole in the component to be connected (d f) | 8.0 mm |
Head type | With connection thread (metric) |
Type description | W-BS type ST |
| Through hole in the component being connected | df ≤ [mm] | 8 |
| Diameter of cutting edges | dcut ≤ [mm] | 6,40 | ||
| Drill hole depth | h1 ≥ [mm] | 40 | 45 | 60 |
| Through hole in the component being connected | df ≤ [mm] | 8 | ||
| Width across flats | [mm] | WS10 | ||
| Screw-head height | hh [mm] | 20 | ||
| Connecting thread | M8 x 16 mm | |||
| Max. rated torque of tangential impact screwdriver | Timp,max [Nm] | 160 | ||
| Installation torque | Tinst ≤ [Nm] | 10 | ||
| 1) For anchors in a redundant non-structural system | ||||
| Through hole in the fixture | df ≤ | [mm] | 8 | |
| 6 | 35 | 0,66 | 0,91 | 80 | 80 | 40 | 80 | 10 | 10 | |
| 6 | 55 | 1,17 | 2,37 | 80 | 80 | 40 | 80 | 10 | 185 | |
| Hollow calcium silicate block KS L, 3DF in accordance with DIN EN 771-2:2015-11 SWKV KSL 12 - 1.6 - 3DF - 240 x 175 x 113 mm, stone raw density ρ ≥ 1.5 kg/dm3, stone compressive strength fmean = 17 N/mm2, minimum wall thickness hmin = 175 mm | ||||||||||
| 6 | 35 | 0,31 | 0,46 | 58 | 80 | 35 | 58 | 11 | 10 | 100 |
| 6 | 55 | 0,31 | 0,46 | 58 | 80 | 35 | 58 | 11 | 100 | |
| Masonry brick Mz in accordance with DIN EN 771-1:2015-11 Mz 20 - 2.0 - NF - 240 x 115 x 75 mm, stone raw density ρ ≥ 2.1 kg/dm3, stone compressive strength fmean = 21 N/mm2, minimum wall thickness hmin = 240 mm | ||||||||||
| 6 | 35 | 0,46 | 0,6 | 80 | 80 | 35 | 80 | 3 | 9 | |
| 6 | 55 | 0,46 | 0,6 | 80 | 80 | 35 | 80 | 3 | 9 | |
| Notes: For further details on compressive strength, spacing, edge distances and installation positions, please refer to ETA-23/0196 To determine the admissible load, the partial safety factor from ETA γM=2.5 was taken into account on the resistance side and a partial safety factor γF=1.4 on the impact side. The specified values apply to an individual anchor in masonry with fvko: 0.15 [N/mm²] and σd: 0.2 [N/mm²]. For combinations of tensile and shear loads, bending torques or reduced spacing and edge distances, please see ETA-23/0196. Documentation for block removal must also be provided. | ||||||||||
| C2 | ||||
| Admissible load when exposed to fire (R30, R60, R90, R120), see European Technical Assessment ETA-16/0043 | ||||
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