BA 9213 en 03/2012
Nominal
thread
diameter
Tightening torque
for screwconnection classes
from table 9
Initial-tensioning force
for screwconnection classes
from table 9
Strength
class of the
screw
E
D
C
E
D
C
d
mm
M
A
Nm
F
M min
N
M90x6
8.8
1510000
968000
605000
30600
26300
23500
10.9
2150000
1380000
860000
43500
37500
33400
12.9
2520000
1600000
1010000
51000
43800
39200
M100x6
8.8
1880000
1200000
750000
42100
36200
32300
10.9
2670000
1710000
1070000
60000
51600
46100
12.9
3130000
2000000
1250000
70000
60400
53900
Damaged bolts must be replaced with new bolts of the same type and strength class.