2/19/09
MR15554
9
BOLT TORQUE
BOLT TORQUE SPECIFICATIONS
GENERAL TORQUE SPECIFICATION TABLES
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given. Always use grade 5 or better when replacing bolts.
SAE BOLT TORQUE SPECIFICATIONS
NOTE: The following torque values are for use with extreme pressure lubricants, plating or hard washer
applications Increase torque 15% when using hardware that is unplated and either dry or lubricated with
engine oil.
Bolt Size
SAE GRADE 5 TORQUE
SAE GRADE 8 TORQUE
Pounds Feet
Newton-Meters
Pounds Feet
Newton-Meters
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NOTE: Manufacturing Marks Will Vary
Inches
Millimeters
UNC
UNF
UNC
UNF
UNC
UNF
UNC
UNF
1/4
6.35
8
9
11
12
10
13
14
18
5/16
7.94
14
19
19
23
20
25
27
34
3/8
9.53
30
36
41
49
38
46
52
62
7/16
11.11
46
54
62
73
60
71
81
96
1/2
12.70
68
82
92
111
94
112
127
152
9/16
14.29
94
112
127
152
136
163
184
221
5/8
15.88
128
153
174
207
187
224
254
304
3/4
19.05
230
275
312
373
323
395
438
536
7/8
22.23
340
408
461
553
510
612
691
830
1
25.40
493
592
668
803
765
918
1037
1245
1-1/8
25.58
680
748
922
1014
1088
1224
1475
1660
1-1/4
31.75
952
1054
1291
1429
1547
1700
2097
2305
1-3/8
34.93
1241
1428
1683
1936
2023
2312
2743
3135
1-1/2
38.10
1649
1870
2236
2535
2686
3026
3642
4103
METRIC BOLT TORQUE SPECIFICATIONS
NOTE: The following torque values are for use with metric hard-
ware that is unplated and either dry or lubricated with engine oil.
Reduce torque 15% when using hardware that has extreme
pressure lubricants, plating or hard washer applications.
Size of Bolt
Grade No.
Pitch (mm)
Pounds Feet
Newton-Meters
Pitch (mm)
Pounds Feet
Newton-Meters
5.6
3.6-5.8
4.9-7.9
-
-
M6
8.8
1.0
5.8-.4
7.9-12.7
-
-
-
10.9
7.2-10
9.8-13.6
-
-
5.6
7.2-14
9.8-19
12-17
16.3-23
M8
8.8
1.25
17-22
23-29.8
1.0
19-27
25.7-36.6
10.9
20-26
27.1-35.2
22-31
29.8-42
5.6
20-25
27.1-33.9
20-29
27.1-39.3
M10
8.8
1.5
34-40
46.1-54.2
1.25
35-47
47.4-63.7
10.9
38-46
51.5-62.3
40-52
54.2-70.5
5.6
28-34
37.9-46.1
31-41
42-55.6
M12
8.8
1.75
51-59
69.1-79.9
1.25
56-68
75.9-92.1
10.9
57-66
77.2-89.4
62-75
84-101.6
5.6
49-56
66.4-75.9
52-64
70.5-86.7
M14
8.8
2.0
81-93
109.8-126
1.5
90-106
122-143.6
10.9
96-109
130.1-147.7
107-124
145-168
5.6
67-77
90.8-104.3
69-83
93.5-112.5
M16
8.8
2.0
116-130
157.2-176.2
1.5
120-138
162.6-187
10.9
129-145
174.8-196.5
140-158
189.7-214.1
5.6
88-100
119.2-136
100-117
136-158.5
M18
8.8
2.0
150-168
203.3-227.6
1.5
177-199
239.8-269.6
10.9
175-194
237.1-262.9
202-231
273.7-313
5.6
108-130
146.3-176.2
132-150
178.9-203.3
M20
8.8
2.5
186-205
252-277.8
1.5
206-242
279.1-327.9
10.9
213-249
288.6-337.4
246-289
333.3-391.6
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