Standard Torques For Hexagonal / Socket / Flange Screws - Kohler KD62V12 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. 101: 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 / socket / flange screws

Information
Values apply only to screws with coating and without lubricant.
For hexagonal screws in accordance with:
– ISO 4014
– ISO 4017
For socket screws in accordance with:
– ISO 4762
Thread
diameter
(mm)
M6
KD62V12 33521030301_6_1 EN_US
2019-02
Quality class 8.8
Hexagonal Socket
screw screw
9 Nm
7 ft-lb
© 2019 by Kohler Co. All rights reserved.
Quality class 10.9
Flange Hexagonal
screw screw
Appendix
Standard tightening torques
Socket Flange
screw screw
14 Nm
10 ft-lb
161