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BA 5060 EN 04/2011
Nominal
thread
diameter
Tightening torque
for screw-connection classes
from table 7
Initial-tensioning force
for screw-connection classes
from table 7
Strength
class
of the bolt
EDCEDC
d
mm
M
A
Nm
F
M
min.
N
M30
8.8 170000 109000 68000 1210 1040 930
10.9 243000 155000 97000 1720 1480 1330
12.9 284000 182000 114000 2010 1740 1550
M36
8.8 246000 157000 98300 2080 1790 1600
10.9 350000 224000 140000 2960 2550 2280
12.9 409000 262000 164000 3460 2980 2670
M42
8.8 331000 212000 132000 3260 2810 2510
10.9 471000 301000 188000 4640 4000 3750
12.9 551000 352000 220000 5430 4680 4180
M48
8.8 421000 269000 168000 4750 4090 3650
10.9 599000 383000 240000 6760 5820 5200
12.9 700000 448000 280000 7900 6810 6080
M56
8.8 568000 363000 227000 7430 6400 5710
10.9 806000 516000 323000 10500 9090 8120
12.9 944000 604000 378000 12300 10600 9500
M64
8.8 744000 476000 298000 11000 9480 8460
10.9 1060000 676000 423000 15600 13500 12000
12.9 1240000 792000 495000 18300 15800 14100
M72x6
8.8 944000 604000 378000 15500 13400 11900
10.9 1340000 856000 535000 22000 18900 16900
12.9 1570000 1000000 628000 25800 22200 19800
M80x6
8.8 1190000 760000 475000 21500 18500 16500
10.9 1690000 1100000 675000 30500 26400 23400
12.9 1980000 1360000 790000 35700 31400 27400
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.
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