Self-drilling Dowel WS for Timber/Steel Joints

Application

Framework joints

Main/secondary purlin joints

Vertical strut bases



Properties

Load-bearing capacity depends on:

accuracy of fit

installation spacing of pins

ductility (flow behaviour of the pin material,

failure of the joint only after significant

deformation)

Common method: complicated production of

joints with unsatisfactory quality

Dowel Joints

trusses

beam
connection
s

vertical
strut
bases

Characteristics of WS-Fastener

T40 socket
drive

Underhead
thread

Shank section

Drill
point

Easy handling

1. Fitting the steel
plates

2. Aligning and fixing it in
position

3. Inserting the dowel



pilot drilling in

timber



pilot drilling in

steel



touching up

Self-drilling Dowels WS

(Diameter 7 mm)



Framework gusseted joint as usual

–

with CNC trimming unit



cut metal plate to size



drill/punch metal plate, 0,5 -
1 mm larger than pin
diameter



drill timber parts



slot timber parts



insert metal plate



drive in pin

–

additional operations without
CNC trimming



make drilling template or
draw drilling pattern



drill timber parts



insert metal plate, centre -
drill; or drill/punch in advance
acc. to drilling pattern



insert metal plate again



Producing framework joints using
the WS-System

–

cut metal plate to size

–

slot timber parts

–

insert metal plate

–

apply drilling pattern to timber
parts

–

insert WS-fastener

Self-drilling Dowels WS

(Diameter 7 mm)

B

s

Truss width B

[mm]

Fastener

WS-T-7xL [L=mm]

Metal plate

thickness s [mm] /

amount

120

WS-T-7x113

5 / 1

140

WS-T-7x133

5 / 2

160

WS-T-7x153

5 / max 3

180

WS-T-7x173

5 / max 3

200

WS-T-7x193

5 / max 3

220

WS-T-7x213

5 / max 3

240

WS-T-7x233

General conditions



Maximum drilling

capacity is 3 x 5 mm
St 37.



Maximum metal plate

thickness is 1 x 10
mm.

L

5 / max 3

Self-drilling Dowels WS

(Diameter 5 mm)

B

s

General conditions



Maximum drilling

capacity is 3 x 5 mm
St 37

L

Truss width B

[mm]

Fastener

WS-T-5xL [L=mm]

metal plate thickness

s [mm]

80

WS-T-5x73

5

100

WS-T-5x93

5 / max 2

120

WS-T-5x113

5 / max 2

140

WS-T-5x133

5 / max 3

Applications

User-friendly setting tools

Fastening system WS of SFS intec

Summary



easy and secure

handling



perfect fit



low equipment costs