Siemens SIMOTICS S-1FG1 Operating Instructions Manual page 83

Tightening torques for fastening bolts
The general tolerance for the tightening torque is 10%. The tightening torque is based on a
friction coefficient of μ = 0.14.
Table 4- 3
Tightening torques for screw plugs and valves
The mounting tools to be used are a torque wrench or pneumatic or impact power
screwdriver with automatic switch-off.
Table 4- 4
Pipe thread according to
DIN ISO 228 Part1
Note
The values given in the table "Tightening torque for screw plugs and valves" also apply for all
metal valves, e.g. oil drain vales, pressure vent valves.
Plastic vent filters and oil sight glasses must be tightened manually.
SIMOTICS S-1FG1 servo geared motor
Operating Instructions, 07/2019, A5E47360747B AA
Tightening torque for fastening bolts
Thread size
M4
M5
M6
M8
M10
M12
M16
M20
M24
M30
Tightening torque for screw plugs and valves
Tightening torque for brass screws
Tolerance +/- 10% in Nm
d1
G 1/8 A
G 1/4 A
G 3/8 A
G 1/2 A
G 3/4 A
Tightening torque at strength class in Nm
8.8 10.9
3
6
10
25
50
90 120
210 295
450 580
750 1000
1 500 2 000
Gearbox cover
8
10
24
32
60
4.3 Mounting instructions
12.9
4 5
9 10
15 18
35 41
70 85
145
355
690
1200
2 400
Tightening torque for ferrous metal
screws
Tolerance +/- 12.5% in Nm
Gearbox cover
10
10
35
-
85
Mounting
81