ESCRFTC

Fully Threaded Countersunk Structural Wood Screw

ESCRFTC is a fully threaded structural screw with a countersunk head, suitable for hidden timber to timber assembly. This ETA approved screw can also be used for timber reinforcement and load bearing timber structures.

Technical Data Sheet

CE Marking

ETA

Service class 2

Yellow electro-galvanised steel

Indoor

EPD

Fastener Designer

Product Details

Images

Features

Material

Steel - Electrogalvanised yellow zinc coating

Features

ETA approved (ETA-13/0796)
No pre-drilling required
High withdrawal resistance
Fully threaded
Countersunk head
Half cut point reduces splitting effect and allows smaller minimum spacings and edge distances. Easier installation when skewed
6 lobe drive

Application

Suitable for

Solid Timber, Glulam timber, CLT, Wood-based panels
Pre-drilled steel plate

Common Applications

Timber to timber assembly
Timber reinforcement (to transversile tension or compression)
Solid Timber
Glulam timber
CLT
Wood-based panels
Pre-drilled steel plate

Technical Data

Dimensions

Product Dimensions

References	Fastener Dimensions [mm]						Weight [kg]
References	l	l_g	d₁	d	d_h	Driver Bit	Weight [kg]
ESCRFTC8.0X120	120	110	5.1	8	15	T-40	0.026
ESCRFTC8.0X140	140	130	5.1		15	T-40	0.03
ESCRFTC8.0X180	180	170	5.1		15	T-40	0.039
ESCRFTC8.0X200	200	190	5.1		15	T-40	0.043
ESCRFTC8.0X300	300	290	5.1		15	T-40	0.063
ESCRFTC10,0X160	160	148	6.3	10	18.5	T-50	0.05
ESCRFTC10.0X200	200	188	6.3		18.5	T-50	0.062
ESCRFTC10.0X220	220	208	6.3		18.5	T-50	0.068
ESCRFTC10.0X240	240	228	6.3		18.5	T-50	0.074
ESCRFTC10.0X300	300	288	6.3		18.5	T-50	0.092
ESCRFTC10.0X350	350	338	6.3		18.5	T-50	0.11
ESCRFTC10.0X400	400	388	6.3		18.5	T-50	0.12
ESCRFTC12.0X500	500	480	7	12	20	T-50	0.2

Structural Parameters - hEN14592

Table "Structural Parameters - hEN14592" cannot be displayed : no references available.

Abacus

Timber toTimber characteristic capacities

References	Product characteristic capacities - Timber to Timber C24
	Axial resistance		Shear resistance parallel to the grain depending of t₁ [Rv.0.k] [kN]
	t₁ [mm]	R_ax.k [kN]	35 [mm]	40 [mm]	45 [mm]	60 [mm]	75 [mm]	80 [mm]	≥100 [mm]
ESCRFTC8.0X300	150	14.67	6.33	6.74	6.74	6.74	6.74	6.74	6.74
ESCRFTC10.0X240	120	13.38	-	7.87	8.23	8.35	8.35	8.35	8.35
ESCRFTC10.0X300	150	17.13	-	8.8	9.16	9.29	9.29	9.29	9.29
ESCRFTC10.0X350	175	20.25	-	9.05	9.77	10.01	10.01	10.01	10.01
ESCRFTC10.0X400	200	21.13	-	9.05	9.77	10.01	10.01	10.01	10.01
ESCRFTC12.0X500	250	30.24	-	-	-	-	-	12.47	12.47

These capacities are valid for:

Timber element under the head with thickness ≤ t₁ disclosed in adjacent column
Screw axis between 45° and 90° from timber grain for ESCR(XXX), and 90° from timber grain for all other screws.

For tightening screws (partially threaded), t₁ dimension is the maximum thickness of the under-head timber member for which the thread is fully in the pointside timber member, for an optimum installation and tightening.

The shear capacities are given for several timber thicknesses t1 of the under-head member under the following configurations:

Load axis at 0° from both timber grains R_v.0°.k
Load axis at 90° from both timber grains R_v.90°.k

These capacities are valid for C24 timber grades or higher
The pre-drilled hypothesis for capacity and distances calculation is fulfilled.
For partial threaded screws, capacities are only given for configurations where the thread is less than 5mm in under-head timber member, in order to achieve optimum installation and tightening.
Clause (2) in 8.3.1.2 from EN1995-1-1:2004+A2:2014 about embedment length is ignored in these calculations.