W-BS/S concrete screw with countersunk head - CONCSCR-(W-BS/SK)-(A2K)-TX30-25-45-6X80

W-BS/S concrete screw with countersunk head - CONCSCR-(W-BS/SK)-(A2K)-TX30-25-45-6X80 - 1

W-BS/S concrete screw with countersunk head - CONCSCR-(W-BS/SK)-(A2K)-TX30-25-45-6X80 - 2

W-BS/S concrete screw with countersunk head

Name: W-BS/S concrete screw with countersunk head
Brand: Würth
SKU: 5929136045

CONCSCR-(W-BS/SK)-(A2K)-TX30-25-45-6X80

Art.-no. 5929136045

EAN 4046777685244

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W-BS/S concrete screw with countersunk head

Art.-no. 5929136045

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x 100 pcs

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The zinc plated steel design for flush fastening of railings or handrails, for example, boasts very high load capacities and efficient installation.

For anchorage in concrete and masonry

Up to three effective anchorage depths for extremely flexible application (size 6-10)

Fastening can be adjusted up to twice after installation (size 6-10), for example in order to align railings or anchor plates (please refer to the installation instructions)

Very high loads

Very low spacing and edge distances due to very low expansion effect

Very fast and simple installation and immediate load-bearing capacity

Attractive, flush-mount installation possible

Proof of Performance

European technical assessment ETA-16/0043 for single fixing point, option 1, cracked and uncracked concrete:

Static and quasi-static action (∅6-∅10)

Seismic action, performance category C1 (∅6-∅10) and C2 (∅8-∅10)

Fire resistance R30, R60, R90, R120

European technical assessment ETA-23/0196 for anchorage in masonry

Static and quasi-static action (dia. 5-10)

Fire resistance R30, R60, R90, R120 (dia. 5-6)

European technical assessment ETA-16/0128 for anchors in a redundant non-structural system:

Cracked and uncracked concrete, (∅5 and ∅6)

Hollow-core prestressed concrete slabs 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 anchorage in concrete (∅10), type SK countersunk head

Use in combination with WIT-BS injectable mortar as WIT-BS bonded screw anchor

In reinforced and non-reinforced and cracked and uncracked concrete C20/25 to C50/60

Fire resistance period when exposed to fire in accordance with the standard time-temperature curve in masonry (Mz, KSL, KS) and steel-reinforced concrete, (∅5 and ∅6) - 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 maximum rated torque must be observed. When used in masonry, the stone-specific installation data in accordance with ETA-23/0196 must be observed.

Application area

Railings

Handrails

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 single fixing point, option 1, cracked and uncracked concrete:

Static and quasi-static action (∅6-∅10)

Seismic action, performance category C1 (∅6-∅10) and C2 (∅8-∅10)

Fire resistance R30, R60, R90, R120

European technical assessment ETA-23/0196 for anchorage in masonry

Static and quasi-static action (dia. 5-10)

Fire resistance R30, R60, R90, R120 (dia. 5-6)

European technical assessment ETA-16/0128 for anchors in a redundant non-structural system:

Cracked and uncracked concrete, (∅5 and ∅6)

Hollow-core prestressed concrete slabs 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 anchorage in concrete (∅10), type SK countersunk head

Use in combination with WIT-BS injectable mortar as WIT-BS bonded screw anchor

In reinforced and non-reinforced and cracked and uncracked concrete C20/25 to C50/60

Product information

Würth Catalogue

Datasheets(X)

Certificates/ Documents

Application area

Anchorages in concrete, single fixing point with approval (∅6-∅10): 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), (∅5 and ∅6)

In hollow-core prestressed concrete slabs C30/37 - C50/60, (∅6)

Anchorages in masonry with approval (dia. 5-10):

In solid sand-lime block and perforated block

In solid block masonry brick

Specifically designed for surface-flush, visually appealing installation

Suitable for fastening medium to heavy loads in concrete and light to medium loads in masonry:

Fastening of e.g. staircase railings and balcony balustrades, handrails, steel constructions, wooden substructures, metal profiles etc. in in-place installation

Fastenings subject to seismic loads in earthquake areas (only concrete)

Fastenings subject to fire exposure

W-BS/S (galvanised steel) may only be used in dry indoor conditions

For use in concrete < C20/25 and pressure-resistant natural stone (without approval)

Anchor size	6 mm
Anchor length (l)	80 mm
Attachment height (t fix 1)	45 mm
Attachment height (t fix 2)	40 mm
Attachment height (t fix 3)	25 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
Head diameter (d sk)	13 mm
Internal drive	TX30
Head type	Countersunk head
Material	Steel
Through-hole in the component to be connected (d f)	8.0 mm
Surface	Zinc plated
Type description	W-BS type SK

General installation parameters in masonry:
Anchor size		Diameter	5	6		8		10
Nominal length of thread engagement		h_nom	h_nom1	h_nom1	h_nom2	h_nom1	h_nom2	h_nom1		h_nom2
		[mm]	35	35	55	45	65	55		75
Nominal drill diameter	d0	[mm]	5	6		8		10
Diameter of cutting edges	d_cut ≤	[mm]	5,4	6,4		8,45		10,45
Drill hole depth	h₀ ≥	[mm]	55	55	75	65	85	75	95
Through hole in the fixture	d_f ≤	[mm]	7	8		12		14

Performance data of an individual anchor in solid and perforated block masonry in accordance with ETA-23/0196
Anchor size	Nominal length of thread engagement	Admissible tensile load	Admissible shear load	Min. edge distance	Min. spacing	Distance from joints		Max. torque for manual installation	Max. torque for installation with drill/driver	Installation using tangential impact driver
	h_nom	N_adm	V_adm	c_min	s_{min, \|\|}= s_{min, ⊥}	c_{j ⊥} ≥	c_{j \|\|} ≥	T_inst≤	T_inst≤	T_imp,max
[mm]	[mm]	[kN]	[kN]	[mm]	[mm]	[mm]	[mm]	[Nm]	[Nm]	[Nm]
Solid sand-lime block KS NF in accordance with EN 771-2:2015-11 KS 20 -2.0 - NF - 240 x 115 x 71 mm, stone raw density ρ ≥ 2.0 kg/dm³, stone compressive strength f_mean = 26 N/mm², minimum wall thickness h_min = 240 mm
5	35	1	0,94	80	80	35	80	6		185
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
8	45	1,17	0,94	80	80	35	80	27		300
8	65	1,23	0,94	80	80	35	80	23		300
10	55	1,06	0,94	80	80	35	80	34		300
10	75	1,29	0,94	80	80	35	80	146		300
Silka XL solid sand-lime block KS 12DF in accordance with DIN EN 771-2:2015-11 KS- R (P) -2.0 - 12DF - 498 x 175 x 148 mm, stone raw density ρ ≥ 1.8 kg/dm³, stone compressive strength f_mean = 14 N/mm², minimum wall thickness h_min = 175 mm
5	35	0,66	0,91	80	80	40	80	6
6	35	0,66	0,91	80	80	40	80	10	10
6	55	1,17	2,37	80	80	40	80	10		185
8	45	1,8	0,91	80	80	40	80	25		300
8	65	1,8	2,14	80	80	40	80	25		300
10	55	1,83	1,69	80	80	40	80	45		300
10	75	1,91	2,44	80	80	40	80	45		300
Hollow sand-lime 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 f_mean = 17 N/mm², minimum wall thickness h_min= 175 mm
5	35	0,31	0,46	58	80	35	58	6	8	100
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
8	45	0,46	0,46	58	80	35	58	27		200
8	65	0,46	0,46	58	80	35	58	27		200
10	55	0,63	0,63	58	80	35	58	37		200
10	75	0,63	0,63	58	80	35	58	46		200
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 f_mean = 21 N/mm², minimum wall thickness h_min = 240 mm
5	35	0,46	0,6	80	80	35	80	2	4
6	35	0,46	0,6	80	80	35	80	3	9
6	55	0,46	0,6	80	80	35	80	3	9
8	45	0,66	0,6	80	80	35	80	16	14
8	65	0,66	0,6	80	80	35	80	16	14
10	55	0,86	0,6	80	80	35	80	23		185
10	75	0,91	0,77	80	80	35	80	23		185
Lightweight concrete solid block Vbl in accordance with DIN EN 771-3:2015-11 Vbl 4 - 1.0 - 2DF - 240 x 115 x 113 mm, stone raw density ρ ≥ 1.5 kg/dm³, stone compressive strength f_mean = 4 N/mm², minimum wall thickness h_min = 240 mm
8	65	0,17	0,66	80	80	35	80	6	10
10	75	0,37	0,91	80	80	35	80	5	14
Notes: For further details on compressive strength, edge distances and spacing and installation positions, please refer to ETA-23/0196 To determine the admissible load, the partial safety factor from ETA γ_M=2.5 was taken into account on the resistance side and a partial safety factor γ_F=1.4 on the impact side. The specified values apply to an individual anchor in masonry with f_vko: 0.15 [N/mm²] and σ_d: 0.2 [N/mm²]. For combinations of tensile and shear loads, bending moments or reduced edge distances and spacing, please see ETA-23/0196. Documentation for brick removal must also be provided.

Performance data in concrete: single fixing point in accordance with ETA-16/0043
Anchor size [mm]			6		8			10
Nominal length of thread engagement		h_nom [mm]	40	55	45	55	65	55	75	85
Admissible tension load¹⁾ on an individual anchor without the influence of the edge distance	Tensile zone (cracked concrete C20/25²⁾, s ≥ 3 h_ef c ≥ 1.5 h_ef)	N_adm [kN] = C20/25²⁾	1,0	1,9	2,4	4,3	5,7	4,3	8,0	9,6
	Compressive zone (uncracked concrete C20/25²⁾, s ≥ 3 h_ef c ≥ 1.5 h_ef)	N_adm [kN] = C20/25²⁾	1,9	4,3	3,6	5,7	7,6	5,7	9,5	11,9
Admissible shear load¹⁾ on an individual anchor without the influence of the edge distance	Tensile zone (cracked concrete C20/25²⁾, c ≥ 10 h_ef)	V_adm [kN] = C20/25²⁾	3,0	3,3	3,6	4,8	6,4	4,8	15,9	16,2
	Compressive zone (uncracked concrete C20/25²⁾, c ≥ 10 h_ef)	V_adm [kN] = C20/25²⁾	3,3	3,3	5,0	6,8	8,1	6,8	16,2	16,2
Admissible bending moment		M_adm [Nm]	4,8		12,4			26,7
Admissible load under seismic activity performance categories C1 and C2 see European technical assessment ETA-16/0043		C1	x	x			x	x		x
		C2					x			x
For admissible load when exposed to fire (R30, R60, R90, R120), see European technical assessment ETA-16/0043

Installation parameters in prestressed hollow ceiling panels
Anchor size [mm]		6
Minimum spacing	s_min [mm]	100
Minimum edge distance	c_min [mm]	100
Minimum spacing between the groups of anchors	a_min [mm]	100
Spacing between cavities	l_c ≥ [mm]	100
Spacing between tensioning strands	l_p ≥ [mm]	100
Spacing between tensioning strands and drill hole	a_p ≥ [mm]	50
Nominal drill∅	d₀ [mm]	6
Through hole in the member being connected	d_f ≤ [mm]	8

Installation parameters in concrete
Anchor size [mm]		5	6			8			10
Nominal length of thread engagement	h_nom [mm]	35¹⁾	35¹⁾	40	55	45	55	65	55	75	85
Minimum spacing	s_min [mm]	35	35	40		40	50		50
Spacing	s_cr,N [mm]	81	81	93	132	105	129	156	129	180	204
Minimum edge distance	c_min [mm]	35	35	40		40	50		50
Edge distance	c_cr,N [mm]	40,5	40,5	46,5	66	52,5	64,5	78	64,5	90	102
Minimum member thickness	h_min [mm]	80	80			80			80
Nominal drill∅	d₀ [mm]	5	6			8			10
Dia. of cutting edges	d_cut ≤ [mm]	5,40	6,40			8,45			10,45
Drill hole depth	h₁ ≥ [mm]	40	40	45	60	55	65	75	65	85	95
Through hole in the member being connected	d_f ≤ [mm]	7	8			12			14
Internal drive		TX25	TX30			TX40			TX50
Head diameter	d_sk [mm]	12	13			20			22
Max. rated torque of tangential impact driver	T_imp,max [Nm]	110	160			300			400
¹⁾For anchors in a redundant non-structural system

Performance data in hollow-core prestressed concrete slabs in accordance with ETA-16/0128
Anchor size [mm]		6
Material thickness [mm]		≥ 25	≥ 30	≥ 35
Anchors in a redundant non-structural system in hollow-core prestressed concrete slabs⁵⁾	F_adm [kN]	0,4	0,8	1,2
¹⁾ The partial safety factors of the resistances y_M regulated in the evaluation/approval and a partial safety factor of the action of γ_F = 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 compressive 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 Fadm ≤ 1.4 kN or number of attachment points ≥ 4 and at least one anchor per attachment point produces a load per attachment point of Fadm ≤ 2.1 kN. The admissible loads can be increased if the design shows that the requirements governing the strength and stiffness 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.

Performance data in concrete: anchors in a redundant non-structural system in accordance with ETA-16/0128
Anchor size [mm]			5	6
Nominal length of thread engagement		h_nom [mm]	35	35	55
Anchors in a redundant non-structural system in non-load-bearing systems in concrete³⁾		N_adm [kN] ≥ C20/25	0,6	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 h_ef)	V_adm [kN] = C20/25²⁾	2,0	2,0	3,3
	Compressive zone (uncracked concrete C20/25²⁾, c ≥ 10 h_ef)		2,1	2,8	3,3
Admissible bending moment		M_adm [Nm]	2,5	4,8
For admissible load when exposed to fire (R30, R60, R90, R120), see European technical assessment ETA-16/0128