Alstom FKG1X - Page 102

Installation
Bolting and Tightening torques
S31
-
-0
01EN05
3/4
02--2011
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y is
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 GRID
Tighten
ing
torques values
Values table
The
tool
and
the
tightenin
g
method
must
be
such
that
the
torque
actually
ap-
plied to the screw head corresponds with the reference torque shown in the
table below, to within a tolerance of
±
 20%.
TIGHTENING TORQUES
in
daN.m
STEEL SCREWS
CLASS 6.8
or
STAINLESS A2-
-70,
A4-
-70
CLASS 8.8
or
STAINLESS A2--80, A4--80
M2,5
0
,
0
5
0
,
0
6
M3
0
,
0
9
0
,
1
1
M4
0
,
1
9
0
,
2
6
M5
0
,
3
8
0
,
5
1
M6
0
,
6
6
0
,
8
8
M8
1
,
5
8
2
,
1
1
M10
3
,
2
0
4
,
2
7
M12
4
,
9
7
6
,
6
3
M14
8
,
6
7
1
1
,
5
6
M16
1
3
,
4
2
1
7
,
9
0
M20
2
6
,
2
2
3
4
,
9
8
M24
4
5
,
6
8
6
0
,
9
3
M30
9
0
,
4
4
1
2
0
,
6
5
Example
For
a
theorica
l
torque
of
5
daN.m,
the
tightening
torque
can
be
applie
d
from
4 daN.m to 6daN.m.