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8018429/1DWP/V3-0/2022-06| SICKADDENDUM TO OPERATING INSTRUCTIONS | GMS840
Subject to change without notice
8 TECHNICAL DATA
8.1.2 Torques
All screw connections for which no tightening torque or preload force is stated in drawings
or mounting instructions are to be tightened according to VDI 2230.
All connections with screws which are not classic screw connections are excluded from this
rule. This means strap retainers, cable glands, screw fittings, gas connections, screws for
circuit boards etc. Here, the screw fittings have to be tightened as evenly as possible with a
significantly lower tightening torque (strap retainers 1 Nm, other screw fittings according to
manufacturer specification).
Select the next lower valid tightening torque for the screw for mixed materials and special
screws as well as relieved screws.
The basic friction coefficient is (screw fittings without lubrication) μk=μG=0.14. The
calculated values are valid for room temperature (T=20°C).
Dimension
Pitch P Tightening torque Ma (Nm)
3.6 4.6 5.6
8.8, A2
a. A4-
80
10.9 12.9
M 1.6 0.4 0.05
0.05 0.17 0.28
M 2 0.45 0.1
0.11 0.35 0.6
M 2.5 0.45 0.21
0.23 0.73 1.23
M 3 0.5 0.54
11.31.7 2
M 3.5 0.6 0.85
1.3 1.9 2.6 3.2
M 4 0.7 1.02
22.54.4 5.1
M 5 0.8 2
2.7 5 8.7 10
M 6 1 3.5
4.6 10 15 18
M 8 1.25 8.4
11 25 36 43
M 10 1.5 17
22 49 72 84
M 12 1.75 29
39 85 125 145
M14 2 46
62 135 200 235
M 16 2 71
95 210 310 365
M 18 2.5 97
130 300 430 500
M 20 2.5 138
184 425 610 710
M 22 2.5 186
250 580 830 970
M 24 3 235
315 730 1050 1220
M 27 3 350
470 1100 1550 1800
M 30 3.5 475
635 1450 2100 2450
M 33 3.5 645
865 2000 2800 3400
M 36 4 1080
1440 2600 3700 4300
M 39 4 1330
1780 3400 4800 5600
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