Siemens KMS Assembly And Operating Instructions Manual page 49

Nominal Strength
diameter of class of the
the thread bolt
d
mm
8.8
M80x6 10.9
12.9
8.8
M90x6 10.9
12.9
8.8
M100x6
10.9
12.9
Note
Damaged bolts must be replaced with new bolts of the same type and strength class.
Initial tensioning force for screw
connection classes from table 8
C D
F
M min.
N
1190000 760000
1690000 1100000
1980000 1360000
1510000 968000
2150000 1380000
2520000 1600000
1880000 1200000
2670000 1710000
3130000 2000000
BA 9137 en 12/2015
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Tightening torque for screw
connection classes from table 8
E C
475000 21500
675000 30500
790000 35700
605000 30600
860000 43500
1010000 51000
750000 42100
1070000 60000
1250000 70000
D E
M
A
Nm
18500 16500
26400 23400
31400 27400
26300 23500
37500 33400
43800 39200
36200 32300
51600 46100
60400 53900