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Concrete screw stair bolt LONG W-BS/S - ANC-(W-BS/ST)-(A2K)-WS10-M8X16-120-6X155 Concrete screw stair bolt LONG W-BS/S - ANC-(W-BS/ST)-(A2K)-WS10-M8X16-120-6X155 Concrete screw stair bolt LONG W-BS/S - ANC-(W-BS/ST)-(A2K)-WS10-M8X16-120-6X155
Concrete screw stair bolt LONG W-BS/S - ANC-(W-BS/ST)-(A2K)-WS10-M8X16-120-6X155 - 1
Concrete screw stair bolt LONG W-BS/S - ANC-(W-BS/ST)-(A2K)-WS10-M8X16-120-6X155 - 2
Concrete screw stair bolt LONG W-BS/S - ANC-(W-BS/ST)-(A2K)-WS10-M8X16-120-6X155 - 3

Concrete screw stair bolt LONG W-BS/S

Concrete screw W-BS type ST, zinc pl. steel long
ANC-(W-BS/ST)-(A2K)-WS10-M8X16-120-6X155

Art.-no. 5929186120
EAN 4061975585233
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Concrete screw stair bolt LONG W-BS/S

Art.-no. 5929186120

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x 100 pcs

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Ideal for the economical fastening of pipe clamps, spacer sleeves, rails (M8 x 16 connecting thread), through thick insulation materials, zinc-plated steel
  • For anchorage in concrete and masonry

  • Extremely flexible application thanks to up to three effective anchorage depths

  • Extra-long versions for large fixture thicknesses, for example, for fastening through insulation materials

  • 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)
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)

  • 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

Notice

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.

Application area

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)

  • 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

Product information

Würth Catalogue

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Application area

Anchorages in concrete, individual fixing point with approval (dia. 6):


In normal weight concrete C20/25 to C50/60 (cracked and uncracked concrete)



Anchorages in masonry with approval (dia. 6):


  • In solid calcium silicate block and perforated block

  • In solid block masonry brick


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)


With metric connection thread in extra-long version. The efficient fastening solution for many plumbing and HVAC applications under insulated ceilings, where pipes have to be installed on several levels, or for fixtures that need to be removable



Ideal for fastening medium loads in concrete and light to medium loads in masonry:


  • Fastening of e.g. pipe clamps, mounting rails, brackets, metal profiles, ceiling substructures etc. through insulation material

  • 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)

155 mm

Connection thread

M8 x 16

Attachment height (t fix 1)

120 mm

Attachment height (t fix 2)

115 mm

Attachment height (t fix 3)

100 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

Spacing between cavity axes lc ≥ [mm] 100
Spacing between tensioning strands lp ≥ [mm] 100
Spacing between tensioning strands and drilled hole ap ≥ [mm] 50
Nominal drill diameter d0 [mm] 6
Through hole in the component being connected df ≤ [mm] 8
Anchor size [mm] 6
Nominal length of thread engagement hnom [mm] 351) 40 55
Minimum axis distance smin [mm] 35 40
Axis distance scr,N [mm] 81 93 132
Minimum edge distance cmin [mm] 35 40
Edge distance ccr,N [mm] 40,5 46,5 66
Minimum member thickness hmin [mm] 80
Nominal drill diameter d0 [mm] 6
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
Nominal length of thread engagement hnom hnom1 hnom2
[mm] 35 55
Nominal drill diameter d0 [mm] 6
Diameter of cutting edges dcut ≤ [mm] 6,4
Drill hole depth h0 ≥ [mm] 55 75
Through hole in the fixture df ≤ [mm] 8
6 35 0,89 0,94 80 80 35 80 11 10 185
6 55 1,4 0,94 80 80 35 80 11 185
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.
Anchor size [mm] 6
Length of anchor in drilled hole hnom [mm] 40 55
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) 		Nperm. [kN] = C20/252) 1,0 1,9
Compressive zone
(non-cracked concrete C20/252),
s ≥ 3 hef c ≥ 1.5 hef) 		1,9 4,3
Admissible shear load1)
on an individual anchor without the influence of the edge distance 		Tensile zone
(cracked concrete C20/252), c ≥ 10 hef) 		Vperm. [kN] = C20/252) 3,0 3,3
Compressive zone
(non-cracked concrete C20/252), c ≥ 10 hef) 		3,3 3,3
Permissible bending moment Madm [Nm] 4,8
Admissible load under seismic activity performance categories C1 and C2 see European Technical Assessment ETA-16/0043 C1 x x
C2
Admissible load when exposed to fire (R30, R60, R90, R120), see European Technical Assessment ETA-16/0043
Anchor size [mm] 6
Mirror thickness [mm] ≥ 25 ≥ 30 ≥ 35
Anchors in a redundant non-structural system in hollow-core prestressed concrete ceilings5) Fperm. [kN] 0,4 0,8 1,2
1) The partial safety factors of the resistances yM regulated in the evaluation/approval and a partial safety factor of the effects of γF = 1.4 have been taken into account. For a combination of tensile and shear loads, for the influence of the edge distance and anchor groups please see the appropriate guidelines e.g. DIN EN 1992-4.
2) The concrete has normal reinforcement. Higher values are possible for higher concrete strengths.
3) The admissible loads were determined without axial influence and the influence of the edge distance.
4) Number of attachment points ≥ 3 and at least one anchor per attachment point produces a load per attachment point of Fperm ≤ 1.4 kN or number of attachment points ≥ 4 and at least one anchor per attachment point produces a load per attachment point of Fperm ≤ 2.1 kN. The admissible loads can be increased if the design shows that the requirements governing the strength and rigidity of the component to be attached remain satisfied even after the failure of an anchor in terms of the limit state of serviceability and load-bearing capacity.
5) The assembly data must be observed.
Anchor size [mm] 6
Length of anchor in drilled hole hnom [mm] 35 55
Anchors in concrete in a non-structural system based on a redundant design3) Nperm. [kN] ≥ C20/25 0,6 3.64)
Admissible shear load1)
on an individual anchor without the influence of the edge distance 		Tensile zone
(cracked concrete C20/252), c ≥ 10 hef) 		Vperm. [kN] = C20/252) 2,0 3,3
Compressive zone
(non-cracked concrete C20/252), c ≥ 10 hef) 		2,8 3,3
Permissible bending moment Madm [Nm] 4,8
Admissible load when exposed to fire (R30, R60, R90, R120), see European Technical Assessment ETA-16/0128
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