Standard Torques For Hexagonal / Socket / Flange Screws And Hexagonal / Flange Nuts - Kohler KD62V12A Operation And Maintenance Manual

Some nuts and screws are marked to track their reuse:
– Fuel and HP injection pipes
– Cutting rings
If 2 punches appear:
u Replace pipe or system after each untightening.
If none or 1 punch appears:
u Add one punch after each untightening.
8.4.3 Standard torques for hexagonal / socket / flange screws and
hexagonal / flange nuts
Information
Tolerances of the indicated tightening torques: 10%.
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
For flange screws in accordance with:
– EN 1665
For hexagonal nuts in accordance with:
– ISO 4032 / ISO 4034 / ISO 4035
For flange nuts in accordance with:
– EN 1664
Thread
diam‐
eter
M6
M8
M10
M12
M16
M20
KD62V12A 33521061401_1_1 EN_US
2023-10
Quality class 8.8
Hexag‐ Socket Hexag‐
onal screw onal
screw nut
9 Nm (7 ft-lb)
22 Nm (16 ft-lb)
43 Nm (32 ft-lb)
70 Nm (52 ft-lb)
165 Nm (122 ft-lb)
320 Nm (236 ft-lb)
© 2023 by Kohler Co. All rights reserved.
Flange Flange Hexag‐
screw nut onal
screw
75 Nm (55 ft-lb) 100 Nm (74 ft-lb)
183 Nm 240 Nm (177 ft-lb)
(135 ft-lb)
358 Nm 470 Nm (347 ft-lb)
(264 ft-lb)
Standard tightening torques
Quality class 10.9
Socket Hexag‐ Flange
screw onal screw
nut
14 Nm (10 ft-lb)
33 Nm (24 ft-lb)
63 Nm (46 ft-lb)
110 Nm
(81 ft-lb)
270 Nm
(199 ft-lb)
525 Nm
(387 ft-lb)
Appendix
Flange
nut
223