16
| English
1 609 929 K31 • 12.12.06
Reference Values for Maximum Screw/Bolt Tightening Torques
Calculated from the tensional cross-section; utilization of the yield point 90 % (with friction coefficient
µ
total
= 0.12). As a control measure, always check the tightening torque with a torque wrench.
Tips
Before screwing larger, longer screws into hard mate-
rials, it is advisable to predrill a pilot hole with the core
diameter of the thread to approx.
2
/
3
of the screw
length.
Soft Grip
The gripping surface (soft grip)
2
reduces the danger
of slipping and thereby improves the grip on the
machine and the handling.
At the same time, the rubber coating achieves a vibra-
tion-reducing effect.
Maintenance and Service
Maintenance and Cleaning
f
Before any work on the power tool, remove
the battery.
f
For safe and proper working, always keep
the machine and ventilation slots clean.
If the machine should fail despite the care taken in
manufacturing and testing procedures, repair should
be carried out by an after-sales service centre for
Bosch power tools.
In all correspondence and spare parts order, please
always include the 10-digit article number given on
the type plate of the machine.
Service and Customer Assistance
Exploded views and information on spare parts can be
found under:
www.bosch-pt.com
Great Britain
Robert Bosch Ltd. (B.S.C.)
P.O. Box 98
Broadwater Park
North Orbital Road
Denham-Uxbridge
Middlesex UB 9 5HJ
✆
Service:. . . . . . . . . . . . . . +44 (0) 18 95 / 83 87 82
✆
Advice line: . . . . . . . . . . . +44 (0) 18 95 / 83 87 91
Fax: . . . . . . . . . . . . . . . . . . . +44 (0) 18 95 / 83 87 89
Ireland
Origo Ltd.
Unit 23 Magna Drive
Magna Business Park
City West
Dublin 24
✆
Service:. . . . . . . . . . . . . . . +353 (0)1 / 4 66 67 00
Fax: . . . . . . . . . . . . . . . . . . . . +353 (0)1 / 4 66 68 88
Australia and New Zealand
Robert Bosch Australia Pty. Ltd.
RBAU/SPT
1555 Centre Road
P.O. Box 66
3168 Clayton/Victoria
✆
. . . . . . . . . . . . . . . . . . . . +61 (0)1 / 3 00 30 70 44
Fax: . . . . . . . . . . . . . . . . . . . +61 (0)1 / 3 00 30 70 45
www.bosch.com.au
Property Classes according to
DIN 267
Standard Screws/Bolts
High-strength
Bolts
3.6
4.6
5.6
4.8
6.6
5.8
6.8
6.9
8.8
10.9
12.9
M 6
2.71 3.61 4.52 4.8
5.42 6.02 7.22 8.13 9.7
13.6 16.2
M 8
6.57 8.7
11
11.6 13.1 14.6 17.5 19.7 23
33
39
M 10
13
17.5 22
23
26
29
35
39
47
65
78
M 12
22.6 30
37.6 40
45
50
60
67
80
113
135
M 14
36
48
60
65
72
79
95
107
130
180
215
M 16
55
73
92
98
110
122
147
165
196
275
330
M 18
75
101
126
135
151
168
202
227
270
380
450
M 20
107
143
178
190
214
238
286
320
385
540
635
OBJ_BUCH-246-001.book Page 16 Tuesday, December 12, 2006 3:35 PM
