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Bolt Torque Table
These tables are offered as the suggested maximum torque values for dry (not lubricated) threaded products and
are only a general guide.
Check tightness of bolts periodically, replace hardware with the same strength bolt.
Torque specification for bolts are identified by their head markings as shown.
See the "Wheel Torque Specification" page for wheel bolt /nut torque settings
METRIC TORQUE SPECIFICATIONS
A
B
Class 8.8
Wrench
Thread Size:
Size:
"B"
"A"
Fine
N-m
10 mm
6 x 0.75
---
13 mm
8 x 1.0
27
16 mm
10 x 1.25
52
18 mm
12 x 1.25
95
21 mm
14 x 1.5
150
24 mm
16 x 1.5
225
27 mm
18 x 1.5
325
30 mm
20 x 1.5
460
34 mm
22 x 1.5
610
36 mm
24 x 2.0
780
41 mm
27 x 3.0
---
46 mm
30 x 2.0
---
SAE TORQUE SPECIFICATIONS
A
B
Wrench
Thread
SAE 2
Size:
Size: "B"
"A"
Fine
lbs-ft.
7/16"
1/4-28
6
1/2"
5/16-24
13
9/16"
3/8-24
23
5/8"
7/16-20
36
3/4"
1/2-20
55
13/16"
9/16-18
79
15/16"
5/8-18
110
1-1/8"
3/4-16
192
1-5/16"
7/8-14
184
1-1/2"
1.0-12
274
8.8
10.9
Class 10.9
N-m
lbs-ft
lbs-ft
---
---
---
20
38
28
38
73
54
70
135
100
111
210
155
166
315
232
240
460
339
339
640
472
450
860
634
575
1100
811
---
---
---
---
---
---
SAE 2
SAE 5
SAE 5
N-m
N-m
lbs-ft
lbs-ft
8.1
10
13.6
14
17.6
19
25.7
27
31.2
35
47.4
49
48.8
55
74.5
75
74.5
85
115.2
120
107.0
122
165.3
172
149.1
170
230.4
240
260.2
297
402.4
420
249.3
474
642.3
668
371.3
705
955.3
995
Class 8.8
Thread Size: "B"
Coarse
N-m
6 x 1.0
11.3
8 x 1.25
27.3
10 x 1.5
54
12.1.75
93
14 x 2.0
148
16 x 2.0
230
18 x 2.5
329
20 x 2.5
464
22 x 2.5
634
24 x 3.0
798
27 x 3.0
1176
30 x 3.0
1597
SAE 8
Thread
SAE 8
SAE 2
Size: "B"
Coarse
N-m
lbs-ft
19.0
1/4-20
5
36.6
5/16-18
11
66.4
3/8-16
20
101.6
7/16-14
32
162.6
1/2-13
49
233.1
9/16-12
70
325.2
5/8-11
97
569.1
3/4-10
173
905.1
7/8-9
166
1348.2
1.0-8
250
Class 10.9
lbs-ft
N-m
lbs-ft
8.3
16.5
12.2
20.1
40.1
29.6
40
49
36
69
137
101
109
218
161
170
338
249
243
469
346
342
661
487
468
904
667
588
1136
838
867
1674
1234
1178
2274
1677
SAE 5
N-m
N-m
lbs-ft
6.8
8
10.8
14.9
17
23.0
27.1
31
42.0
43.4
49
66.4
66.4
75
101.6
94.9
109
147.7
131.4
150
203.3
234.4
266
360.4
224.9
429
581.3
338.8
644
872.6
SAE 8
N-m
lbs-ft
12
16.3
25
33.9
44
59.6
70
94.9
107
145.0
154
208.7
212
287.3
376
509.5
606
821.1
909
1231.7
35
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