Standard Torques For Hexagonal / Cylinder / External Hexalobular Heads - Kohler KD83V16 Operation And Maintenance Manual

Operation and Maintenance Manual
Screws marking
Information
Except components listed below, and otherwise noted,
u Marking on screws or nuts to track their reuse is not required.
Fig. 100: Examples of markings on screws and HP pipe nut.
Some nuts and screws are marked to track their reuse. For:
– Fuel and HP injections pipes,
– Cutting rings,
If 2 punchs appears,
u Replace pipe or system after each untightening.
If none or 1 punch appears,
u Add one punch after each untightening.
8.4.2 Standard torques for hexagonal / cylinder / external hexalobular
heads
For hexagonal screws in accordance with:
– ISO 4014
– ISO 4017
– ISO 8765
– ISO 8676
For cylinder head screws in accordance with ISO 4762.
For screws with external hexalobular heads in accordance with DIN 34800.
Values for a mean friction factor of μ = 0.12 (without lub.)
Threads
M4
M5
M6
M7
M8
M10
KD83V16 33521030601_0_1 EN_US
2018-07
Nm ft/lb
8.8
3 2.21
6 4.43
10 7.38
16 11.8
23 16.96
46 33.93
© 2018 by Kohler Co. All rights reserved.
Nm ft/lb
10.9
4 2.95
8 5.9
14 10.33
23 16.96
34 25.08
68 50.15
Appendix
Standard tightening torques
Nm ft/lb
12.9
5 3.69
10 7.38
17 12.54
27 19.91
40 29.5
79 58.27
161