Krone BiG X 770-3 - Metric Thread Screws with Fine Thread; Metric Thread Screws with Countersunk Head and Hexagonal Socket

Maintenance
608
20.1.2 Metric Thread Screws with Fine Thread
Tightening torque in Nm (unless
otherwise stated)
A = thread size
(stability class can be seen on screw head)
A
Stability class
5.6
8.8
10.9
12.9
Tightening torque (Nm)
M12 x 1.5
88
130
152
M14 x 1.5
145
213
249
M16 x 1.5
222
327
382
M18 x 1.5
368
525
614
M20 x 1.5
465
662
775
M24 x 2
787
1121
1312
M27 x 2
1148
1635
1914
M30 x 1.5
800
2100
2650
20.1.3 Metric Thread Screws with Countersunk Head and Hexagonal Socket

NOTE
The table applies only to countersunk screws with hexagonal socket and metric thread which
are tightened by the hexagonal socket.
Tightening torque in Nm (unless
otherwise stated)
A = thread size
(stability class can be seen on screw head)
A
Stability class
5,6
8,8
10,9
12,9
Tightening torque (Nm)
M4
2.5
3.5
4.1
M5
4.7
7
8
M6
8
12
15
M8
20
29
35
M10
23
39
58
67
M12
34
68
100
116
M14
108
160
188
M16
168
248
292
M20
340
488
568
A
BM 400 0234