Service and Repair Manual
Appendix
Standard tightening torques
Standard torques for metric thread unions S series (up to 800 bar/
11603 Psi) for steel
According to ISO 9974-2/3 / ISO 6149-2/3 / DIN 3852-1/2, metric threading.
Information
Tolerances of the indicated tightening torques: 10 %.
Always lubricate the thread before tightening these parts (engine oil).
Thread Y
Form A with
sealing edge
Form B with
sealing ring
Form E with flat
sealing
Form F with O-ring
M 10 x 1.0
/
/
23 Nm
17 ft-lb
/
M 12 x 1.5
20 Nm
15 ft-lb
35 Nm
26 ft-lb
35 Nm
26 ft-lb
35 Nm
26 ft-lb
M 14 x 1.5
35 Nm
26 ft-lb
55 Nm
41 ft-lb
55 Nm
41 ft-lb
45 Nm
33 ft-lb
M 16 x 1.5
45 Nm
33 ft-lb
70 Nm
52 ft-lb
70 Nm
52 ft-lb
55 Nm
41 ft-lb
M 18 x 1.5
55 Nm
41 ft-lb
110 Nm
81 ft-lb
90 Nm
66 ft-lb
70 Nm
52 ft-lb
M 20 x 1.5
55 Nm
41 ft-lb
150 Nm
111 ft-lb
125 Nm
92 ft-lb
80 Nm
59 ft-lb
M 22 x 1.5
65 Nm
48 ft-lb
170 Nm
125 ft-lb
135 Nm
100 ft-lb
100 Nm
74 ft-lb
M 27 x 2.0
90 Nm
66 ft-lb
270 Nm
199 ft-lb
180 Nm
133 ft-lb
170 Nm
125 ft-lb
M 33 x 2.0
150 Nm
111 ft-lb
410 Nm
302 ft-lb
310 Nm
229 ft-lb
310 Nm
229 ft-lb
M 42 x 2.0
240 Nm
177 ft-lb
540 Nm
398 ft-lb
450 Nm
332 ft-lb
330 Nm
243 ft-lb
M 48 x 2.0
290 Nm
214 ft-lb
700 Nm
516 ft-lb
540 Nm
398 ft-lb
420 Nm
310 ft-lb
Tab. 67: Standard torques for metric thread union S series, for steel – see figure above
Standard torques for imperial thread unions L series (up to 500
bar/7252 Psi) for steel
According to ISO1179-1 / DIN 3852-T2-Form X / DIN 3852-T3-Form X BSP threading.
Information
Tolerances of the indicated tightening torques: 10 %.
Always lubricate the thread before tightening these parts (engine oil).
KD83V16 33525088901_2_1 EN_US
2021-07
© 2021 by Kohler Co. All rights reserved.
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