TM 10-8145-222-23
0091
TORQUE VALUES CONTINUED
Table 2. MTRCS Component Torque Values (Inch-Pounds).
Assembly
Inch-Pounds
100
Power Box Switch Terminals (S1, S2)
20-25
Power Box Circuit Breaker Terminals
40
Unless otherwise specified in the applicable work package, all fasteners should be tightened to the recommended
torque values shown in the General Torque Specification Tables, Table 3 for U.S. threads, and Table 4 for Metric
threads.
Table 3. Bolt Torque Values for U.S. Threads in Foot-Pounds.
Bolt Size Thread Pitch
Grade 2
Grade 5
Grade 8
1/4-20
6
10
12
1/4-28
7
12
15
5/16-18
13
20
24
5/16-24
14
22
27
3/8-16
23
36
44
3/8-24
26
40
48
7/16-14
37
52
63
7/16-20
41
57
70
1/2-13
57
80
98
1/2-20
64
90
110
9/16-12
82
120
145
9/16-18
91
135
165
5/8-11
111
165
210
5/8-18
128
200
245
3/4-10
200
285
335
3/4-16
233
315
370