FLENDER K.SH - Page 77

Assembly
5.6 Tightening procedure
A5850-02en Edition 06/2022 77
Nominal
thread dia-
meter
Bolt
strength
class
Preload force for bolt connection
classes from the table in chapter
Bolt connection classes
(Page76)
Tightening torque for bolt connec-
tion classes from the table in
chapter Bolt connection classes
(Page76)
d
mm
C D E C D E
F
M min.
N
M
A
Nm
M10 8.8 18000 11500 7200 44.6 38.4 34.3
10.9 26400 16900 10600 65.4 56.4 50.4
12.9 30900 19800 12400 76.5 66.0 58.9
M12 8.8 26300 16800 10500 76.7 66.1 59.0
10.9 38600 24700 15400 113 97.1 86.6
12.9 45100 28900 18100 132 114 101
M16 8.8 49300 31600 19800 186 160 143
10.9 72500 46400 29000 273 235 210
12.9 85000 54400 34000 320 276 246
M20 8.8 77000 49200 30800 364 313 280
10.9 110000 70400 44000 520 450 400
12.9 129000 82400 51500 609 525 468
M24 8.8 109000 69600 43500 614 530 470
10.9 155000 99200 62000 875 755 675
12.9 181000 116000 72500 1020 880 790
M30 8.8 170000 109000 68000 1210 1040 930
10.9 243000 155000 97000 1720 1480 1330
12.9 284000 182000 114000 2010 1740 1550
M36 8.8 246000 157000 98300 2080 1790 1600
10.9 350000 224000 140000 2960 2550 2280
12.9 409000 262000 164000 3460 2980 2670
M42 8.8 331000 212000 132000 3260 2810 2510
10.9 471000 301000 188000 4640 4000 3750
12.9 551000 352000 220000 5430 4680 4180
M48 8.8 421000 269000 168000 4750 4090 3650
10.9 599000 383000 240000 6760 5820 5200
12.9 700000 448000 280000 7900 6810 6080
M56 8.8 568000 363000 227000 7430 6400 5710
10.9 806000 516000 323000 10500 9090 8120
12.9 944000 604000 378000 12300 10600 9500