Concrete screw with hexagon head W-BS 2/A4 type H - ANC-(W-BS 2/H)-A4-WS13-5-25-8X70

Concrete screw with hexagon head W-BS 2/A4 type H - ANC-(W-BS 2/H)-A4-WS13-5-25-8X70 - 1

Concrete screw with hexagon head W-BS 2/A4 type H - ANC-(W-BS 2/H)-A4-WS13-5-25-8X70 - 2

Concrete screw with hexagon head W-BS 2/A4 type H

Name: Concrete screw with hexagon head W-BS 2/A4 type H
Brand: Würth
SKU: 5931228070

ANC-(W-BS 2/H)-A4-WS13-5-25-8X70

Art.-no. 5931228070

EAN 4065746447430

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Concrete screw with hexagon head W-BS 2/A4 type H

Art.-no. 5931228070

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The new generation of A4 stainless steel concrete screws impresses with its high load capacities and easy installation, and is ideal for fastening metal structures in concrete.

The new thread geometry ensures smooth screwing into concrete and thus greater efficiency

The fastest type of fastening for medium and heavy loads

Three effective embedment depths allow flexible application

Fixtures can be adjusted up to twice retrospectively, for example in order to align railings or anchor plates (follow the installation instructions).

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

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

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

Steel supports

Brackets

Adjustment - subsequent aligning possible.

Drill the 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

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

Product information

Würth Catalogue

Datasheets(X)

Certificates/ Documents

Application area

Single fixing point with approval (∅6 - ∅10): In normal weight concrete C20/25 to C50/60 (cracked and uncracked concrete)

Suitable for fastening medium to heavy loads in concrete:

Fastening of e.g. railings, base plates, supports, metal structures, metal profiles, brackets etc. in in-place installation

Fastenings subject to seismic activity in earthquake-prone areas

Fastenings subject to fire exposure

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)

Anchor size	8 mm
Anchor length (l)	70 mm
Attachment height (t fix 1)	25 mm
Attachment height (t fix 2)	15 mm
Attachment height (t fix 3)	5 mm
Thread diameter	10 mm
Nominal drill-bit diameter (d 0)	8 mm
Drill hole depth (h 1.1)	55 mm
Drill hole depth (h 1.2)	65 mm
Drill hole depth (h 1.3)	75 mm
Embedding depth (h nom1)	45 mm
Embedding depth (h nom2)	55 mm
Embedding depth (h nom3)	65 mm
External drive	WS13
Material	Stainless steel A4
Surface	Plain
Washer diameter	16 mm
Head diameter	15 mm
Through-hole in the component to be connected (d f)	12 mm
Head type	Hexagon head

Performance data in concrete - fixing point according to ETA-22/0123
Anchor size [mm]			6			8			10
Nominal length of thread engagement		h_nom [mm]	35³⁾	45	55	45	55	65	55	75	85
Admissible centric 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⁾	1.2	0.7	1.4	1.4	2.6	3.8	2.9	6.2	8.1
	Compressive zone (non-cracked concrete C20/25²⁾, s ≥ 3 h_ef c ≥ 1.5 h_ef)	N_adm. [kN] = C20/25²⁾	1.7	1.9	4.0	4.3	5.7	8.1	5.2	9.0	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⁾	2.0	4.0	4.0	6.2	7.7	9.7	10.4	17.6	19.4
	Compressive zone (non-cracked concrete C20/25²⁾, c ≥ 10 h_ef)	V_adm. [kN] = C20/25²⁾	2.9	4.0	4.0	7.7	7.7	9.7	12.9	19.4	19.4
Admissible bending moment		M_adm. [Nm]	6.2			14.9			32.0
Admissible load under seismic activity performance categories C1 and C2, see European technical assessment ETA-22/0123		C1		x	x	x		x	x		x
		C2
Admissible load when exposed to fire (R30, R60, R90, R120), see European technical assessment ETA-22/0123
¹⁾ The partial safety factors of the resistances γ_M regulated in the approval/assessment and a partial safety factor of the effects of γF = 1.4 have been taken into account. Please refer to the appropriate guidelines, e.g. DIN EN 1992-4, for information on combining tensile and shear loads, the influence of the edge distance and groups of anchors ²⁾ The concrete has normal reinforcement. Higher values are possible for higher concrete compressive strengths ³⁾ Only statically indeterminate non-load-bearing systems (anchors in a redundant non-structural system) according to EN 1992-4, only in dry indoor conditions

Installation parameters in concrete
Anchor size [mm]		6			8			10
Nominal length of thread engagement	h_nom [mm]	35¹⁾	45	55	45	55	65	55	75	85
Minimum spacing	s_min [mm]	35			35			40
Minimum edge distance	c_min [mm]	35			35			40
Minimum member thickness	h_min [mm]	80		100	80	100	120	100	130	130
Thread diameter	d_th [mm]	7.5			10			12
Nominal drill ∅	d₀ ≤ [mm]	6			8			10
∅ of cutting edges	d_cut ≤ [mm]	6.40			8.45			10.45
Drill hole depth	h₀ ≥ [mm]	40	50	60	55	65	75	65	85	95
Through hole in the component being connected	d_f ≤ [mm]	8			12			14
Width across flats	[mm]	AF13			AF13			AF15
Washer diameter	d_w [mm]	17			16			20
Screw-head height	h_n [mm]	6.8			9			10
Max. rated torque of tangential impact screwdriver	T_imp,max [Nm]	160			300			450
¹⁾ Only statically indeterminate non-load-bearing systems (anchors in a redundant non-structural system) according to EN 1992-4 and only in dry indoor conditions