Exceptions to this rule are all connections with screws that are not screw connections in
the real sense. This includes hose clips, cable glands, screw fittings, gas connections,
screws for circuit boards etc. Tighten these screw fittings as evenly as possible with a
much lower torque (hose clips 1 Nm, other screw fittings according to manufacturer
specifications).
Select the next lowest torque valid for the screw for mixed materials and special screws
such as relieved screws.
The friction coefficient serving as basis is (screw fitting without lubrication)
µk=µG=0.14. The calculated values are valid for room temperature (T=20°C).
Table 37: Torques
Size M Pitch P Tightening torque Ma (Nm)
3.6 4.6 5.6 8.8, A2 u.
A4-80
10.9 12.9
1.6 0.4 0.05 0.05 0.17 0.28
2 0.45 0.1 0.11 0.35 0.6
2.5 0.45 0.21 0.23 0.73 1.23
3 0.5 0.54 1 1.3 1.7 2
3.5 0.6 0.85 1.3 1.9 2.6 3.2
4 0.7 1.02 2 2.5 4.4 5.1
5 0.8 2 2.7 5 8.7 10
6 1 3.5 4.6 10 15 18
8 1.25 8.4 11 25 36 43
10 1.5 17 22 49 72 84
12 1.75 29 39 85 125 145
14 2 46 62 135 200 235
16 2 71 95 210 310 365
18 2.5 97 130 300 430 500
20 2.5 138 184 425 610 710
22 2.5 186 250 580 830 970
24 3 235 315 730 1050 1220
27 3 350 470 1100 1550 1800
30 3.5 475 635 1450 2100 2450
33 3.5 645 865 2000 2800 3400
36 4 1080 1440 2600 3700 4300
39 4 1330 1780 3400 4800 5600
10 TECHNICAL DATA
88
T E C H N I C A L I N F O R M A T I O N | MARSIC300 8017585/YXD9/V3-1/2017-05 | SICK
Subject to change without notice
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