SERVICE DATA
2-11
2.2 Standard bolt and nut tightening torque
Note: (a) This table lists the tightening torque for standard bolts and nuts.
(b) The numerical values in the table are for fasteners with spring washers.
(c) The table shows the standard values with a maximum tolerance value of ±10%.
(d) Use the tightening torque in this table unless otherwise specified.
(e) Do not apply oil to threaded portions. (Dry)
Table 2-13 Standard bolt and nut tightening torque
Description
Threads
Dia × Pitch
(mm)
Width
across flats
(mm) [in.]
Strength classification
7T
10.9
Metric automobile screw thread
N·m
kgf·m
lbf·ft
N·m
kgf·m
lbf·ft
M8 × 1.25
12 [0.47]
17
1.7
13
30
3.1
22
M10 × 1.25
14 [0.55]
33
3.4
24
60
6.1
44
M12 × 1.25
17 [0.67]
60
6.1
44
108
11.0
80
M14 × 1.5
22 [0.87]
97
9.9
72
176
17.9
130
M16 × 1.5
24 [0.94]
145
14.8
107
262
26.7
193
M18 × 1.5
27 [1.06]
210
21.4
155
378
38.5
279
M20 × 1.5
30 [1.18]
291
29.7
215
524
53.4
386
M22 × 1.5
32 [1.26]
385
39.3
284
694
70.8
512
M24 × 1.5
36 [1.42]
487
49.7
359
878
89.5
648
M27 × 1.5
41 [1.61]
738
75.3
544
1328
135.5
979
Metric course screw thread
N·m
kgf·m
lbf·ft
N·m
kgf·m
lbf·ft
M10 × 1.5
14 [0.55]
32
3.3
24
58
5.9
43
M12 × 1.75
17 [0.67]
57
5.8
42
102
10.4
75
M14 × 2
22 [0.87]
93
9.5
69
167
17.0
123
M16 × 2
24 [0.94]
139
14.2
103
251
25.6
185
M18 × 2.5
27 [1.06]
194
19.8
143
350
35.7
258
M20 × 2.5
30 [1.18]
272
27.7
201
489
49.9
361
M22 × 2.5
32 [1.26]
363
37.0
268
653
66.6
482
M24 × 3
36 [1.42]
468
47.7
345
843
86.0
622
M27 × 3
41 [1.61]
686
70.0
506
1236
126.0
912
7
10