SPEClFlCATlONS
STANDARD BOLT AND NUT TORQUE SPECIFICATIONS
280M OR BETTER
26OM BOLTS
THREAD
THREAD
SIZE
(lb-ft)
Nm
SIZE
(lb-ft)
Nm
.............................
7-9
10-12
7-9
1/4-20
1/4 -20
..............................
5-7
.............................. 8 - 1 0
11-14
8-11
1/4-28
1 / 4 -28
..............................
6-8
............................ 13-17
5/16-18
18-23
14-18
5/16-18
.............................. 10-13
............................ 15-19
5/16-24
20-26
5/16-24
.............................. 11-14
15-19
41-47
............................ 30-35
3/8 -16
.............................. 23-26
31-35
3/8-16
............................ 35-39
47-53
35-40
3/8-24
.............................. 26-29
3 / 8 -24
7/16-14
............................. 46-50
47-51
7/16-14
.............................. 35-38
62-68
.............................. 57-61
77-83
7/16-20
7/16-20
.............................. 43-46
58-62
.............................. 71-75
96-102
72-76
1/2-13
1 / 2 -13
.............................. 53-56
.............................. 83-93
113-126
1/2-20
84-95
1 / 2 -20
.............................. 62-70
.............................. 90-100
9/16-12
122-136
92-102
9/16-12
.............................. 68-75
.............................. 107-117
146-159
9/16-18
9/16-18
............................. 80-88
109-119
.............................. 137-147
.............................. 103-110
140-149
5/8-11
186-200
5 / 8 -11
.............................. 168-178
171-181
5/8-18
228-242
.............................. 126-134
5 / 8 -18
3/4-10
.............................. 240-250
244-254
325-339
.............................. 180-188
3/4 -10
............................. 290-300
393-407
3/4-16
.............................. 218-225
295-305
3 / 4 -16
............................ 410-420
556-569
.............................. 308-315
417-427
7/8 - 9
7/8 - 9
483-494
7/8-14
................................. 475-485
644-657
.............................. 356-364
7 / 8 -14
.............................. 580-590
1-8
786-800
............................. 435-443
590-600
1-8
............................... 685-695
1 - 14
.............................. 514-521
697-705
928-942
1
-14
Grade identification markings are normally stamped on the heads of the bolts. To aid identification of the various
bolts used in Detroit Diesel engines, refer to the following chart.
No ne
No ne
BOLT IDENTIFICATION CHART
11E-16