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Concrete screw W-BS 2/A4 type I with M8/M10 internal thread
Concrete screw W-BS 2 type I A4 stainless steel
ANC-(W-BS 2/I)-A4-WS13-0-10-6X45
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- With combination sleeve, internal thread M8/M10
- Made from A4 stainless steel
- The fastest type of fastening for medium to heavy loads, especially for installations involving technical building equipment
- Less drilling and installation effort
- The new thread geometry ensures smooth screwing into concrete and thus greater efficiency during assembly
- Smallest axis and edge distances due to very low expansion effect
- Broad range of applications
European Technical Assessment ETA-22/0123 for individual fixing point, option 1, cracked and uncracked concrete:
- Static and quasi-static action (dia. 6)
- Seismic action, performance category C1 (dia. 6)
- Fire resistance R30, R60, R90, R120
When installing with a tangential impact driver, the recommended maximum rated torque must be observed. When used outdoors, the drill hole can be sealed with WIT-BS injectable mortar.
Pipe suspensions
Create the drill hole
Place screw
Screw in the screw
Considered installed when the head is close fitting
European Technical Assessment ETA-22/0123 for individual fixing point, option 1, cracked and uncracked concrete:
- Static and quasi-static action (dia. 6)
- Seismic action, performance category C1 (dia. 6)
- Fire resistance R30, R60, R90, R120
Individual fixing point with ETA/approval (dia. 6):
In normal weight concrete C20/25 to C50/60 (cracked and uncracked concrete)
The simplest solution for suspended installations with threaded rods in sizes M8 and M10. Very efficient fastening solution in concrete for numerous applications involving technical building equipment such as in sanitary, air-conditioning and electrical installation. A4 stainless steel design for use outdoors, in open buildings, in car parks, underground garages or tunnels (corrosion resistance class CRC III).
Ideal for fastening medium loads in concrete:
- Fastening of e.g. single pipe and ventilation installations, suspended ceiling substructures, suspended cable and pipe sections
- Fastenings under seismic conditions in earthquake-prone areas
- Fastenings under exposure to fire
W-BS 2/A4 (A4 stainless steel) can be used in dry indoor conditions, outdoors (including in industrial atmospheres and coastal areas) or in damp rooms, provided that no particularly aggressive conditions are present.
For use in concrete < C20/25 and pressure-resistant natural stone (without ETA/approval)
Anchor size | 6 mm |
Thread diameter | 7.5 mm |
Anchor length (l) | 45 mm |
Head type | With connection thread (metric) |
Connection thread | IT M8, IT M10 |
Material | Stainless steel A4 |
Surface | Plain |
External drive | WS13 |
Nominal drill-bit diameter (d 0) | 6 mm |
Drill hole depth (h 1.1) | 40 mm |
Drill hole depth (h 1.2) | 50 mm |
Embedding depth (h nom1) | 35 mm |
Embedding depth (h nom2) | 45 mm |
Attachment height (t fix 1) | 10 mm |
Attachment height (t fix 2) | 0 mm |
Through-hole in the component to be connected (d f) | 8 mm |
Approval | ETA-22/0123 |
| Performance data in concrete - individual fixing point in accordance with ETA-22/0123 | ||||
| Anchor size [mm] | 6 | |||
| Nominal length of thread engagement | hnom [mm] | 353) | 45 | |
| Admissible centric tension load1) on an individual anchor without the influence of the edge distance | Tensile zone (cracked concrete C20/252), s ≥ 3 hef c ≥ 1.5 hef) | Nadm [kN] = C20/252) | 1,2 | 0,7 |
| Compressive zone (uncracked concrete C20/252), s ≥ 3 hef c ≥ 1.5 hef) | 1,7 | 1,9 | ||
| Admissible shear load1) on an individual anchor without the influence of the edge distance | Tensile zone (cracked concrete C20/252), c ≥ 10 hef) | Vadm [kN] = C20/252) | 2,0 | 4,0 |
| Compressive zone (uncracked concrete C20/252), c ≥ 10 hef) | 2,9 | 4,0 | ||
| Admissible bending moment | Madm [Nm] | 6,2 | ||
| For admissible load under seismic action performance categories C1 and C2, please refer to European Technical Assessment ETA-22/0123 | C1 | x | ||
| C2 | ||||
| For admissible load when exposed to fire (R30, R60, R90, R120), please refer to European Technical Assessment ETA-22/0123 | ||||
| 1) The partial safety factors of the resistances yM regulated in the approval/evaluation and a partial safety factor of the actions of γF = 1.4 have been taken into account. For information on combining tensile and shear loads, on the influence of the edge distance and on anchor groups, please refer to the appropriate guidelines e.g. DIN EN 1992-4. 2) The concrete has normal reinforcement. Higher values are possible for higher concrete compressive strengths. 3) Only for statically indeterminate non-load-bearing systems (anchors in a redundant non-structural system) in accordance with EN 1992-4 and only in dry indoor conditions. | ||||
| Installation parameters in concrete | |||
| Anchor size [mm] | 6 | ||
| Nominal length of thread engagement | hnom [mm] | 351) | 45 |
| Minimum spacing | smin [mm] | 35 | |
| Minimum edge distance | cmin [mm] | 35 | |
| Minimum member thickness | hmin [mm] | 80 | |
| Thread diameter | dth [mm] | 7,5 | |
| Nominal drill diameter | d0 [mm] | 6 | |
| Diameter of cutting edges | dcut ≤ [mm] | 6,40 | |
| Drill hole depth | h0 ≥ [mm] | 40 | 50 |
| Through hole in the member being connected | df ≤ [mm] | 8 | |
| External drive | AF13 | ||
| Screw-head height | hh [mm] | 26 | |
| Washer diameter | dw [mm] | 24,5 | |
| max. rated torque | Timp,max [Nm] | 160 | |
| 1) Only statically indeterminate non-load-bearing systems (anchors in a redundant non-structural system) in accordance with EN 1992-4 and only in dry indoor conditions | |||
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