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7.4 Standard Torque Values
Use only the proper tools (inches) on hardware. Other tools may not fit properly and may slip
!
and cause injury.
Head Markings
Fasteners should be replaced with the same grade or a higher grade. If higher grade fasteners are
used, these should only be tightened to the strength of the original grade fastener.
Do not use these values if a different torque value or the tightening procedure is listed for a specific
application. Torque values listed are for general use only. All values are suggested maximum with dry
plated hardware.
Make sure fastener threads are clean and you properly start thread engagement. This will prevent them
from falling when tightening.
The following pages list the recommended tightening torques for the various size bolts used for the
roller. Proper torque specifications should be used at all times.
Recommended Torques
This page lists the recommended tightening torques, in foot/pounds (ft·lb), for the various size bolts and
nuts that are used. Proper torque specifications should be used at all times. Dry means clean dry
threads and lube means a light film of oil. Excess oil in a threaded dead end hole can create a hydraulic
lock giving false torque readings. Suggested assembly torque values are per engineering
specifications.
M-thread
Size
M6
M8
M10
M12
M14
M16
M20
M22
Maintenance
Metric coarse screw thread, bright galvanized (fzb):
8.8 Oiled
8.8 Dry
8,4
9,4
21
23
40
45
70
78
110
123
169
190
330
370
446
497
10.9 Oiled
10.9, Dry
12
13,4
28
32
56
62
98
110
156
174
240
270
470
520
626
699
12.9,
12.9, Dry
Oiled
14,6
16,3
34
38
68
76
117
131
187
208
290
320
560
620
752
839
60
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