TM5-3825-229-14&P
APPENDIX H
TORQUE LIMITS
H-1.
GENERAL
This section provides general torque limits for fasteners. Special torque values are indicated in the maintenance
procedures for applicable components. The general torque values given in this appendix shall be used when specific
torque values are not indicated in the maintenance procedures.
H-2.
TORQUE LIMITS
Torque limits are listed in table H-1 for dry fasteners and in table H-2 for wet fasteners. Dry fasteners are defined
as fasteners on which no lubricants are applied to the threads; wet fasteners are defined as fasteners on which special
graphited or poly-disulphide greases or other extreme pressure lubricants are applied to the threads. Torque limits listed
in Table H-3 are for specialized torques for dry fasteners. Table H-4 lists torques applicable to the semitrailer engine and
are for wet fasteners.
Table H-1. Torque Limits for Dry Fasteners
TORQUE
SIZE
SAE GRADE
NO. 2
SAE GRADE
NO. 5
SAE GRADE
NO. 8
INCHES
MILLIMETERS
POUNDS
FOOT
NEWTON
METERS
POUNDS
FOOT
NEWTON
METERS
POUNDS
FOOT
NEWTON
METERS
1/4
6.35
5-6
6.8-8.13
9-11
12.2-14.9
12-15
16.3-20.3
5/16
7.94
10-12
13.6-16.3
17-20.5
23.1-27.8
24-29
32.5-39.3
3/8
9.53
20-23
27.1-31.2
35-42
47.5-57.0
45-54
61.0-73.2
7/16
11.11
30-35
40.7-47.4
54-64
73.2-86.8
70-84
94.9-113.9
1/2
12.70
45-52
61.0-70.5
80-96
108.5-130.2
110-132
149.2-179.0
9/16
14.29
65-75
88.1-101.6
110-132
149.2-179.0
160-192
217.0-260.4
5/8
15.88
95-105
128.7-142.3
150-180
203.4-244.1
220-264
298.3-358.0
3/4
19.05
150-185
203.3-250.7
270-324
366.1-439.3
380-456
515.3-518.3
7/8
22.23
160-200
216.8-271.0
400-480
542.4-650.9
600-720
813.6-976.3
1
25.40
250-300
338.8-406.5
580-696
786.5-943.8
900-1080
1220.4-1464.5
1-1/8
25.58
-
-
800-880
1084.8-1193.3
1280-1440
1735.7-1952.8
1-1/4
31.75
-
-
1120-1240
1518.7-1681.4
1820-2000
2467.9-2712.0
1-3/8
34.93
-
-
1460-1680
1979.8-2278.1
2380-2720
3227.3-3688.3
1-1/2
38.10
-
-
1940-2200
2630.6-2983.2
3160-3560
4285.0-4827.4
H-1
