TM-9-2350-311-20-2
HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5
TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL FOR CAB, ARMAMENT, SIGHTING AND FIRE CONTROL, ELEVATING AND TRAVERSING SYSTEMS AND ASSOCIATED COMPONENTS
DECEMBER 1993
TM-9-2350-311-20-2 - Page 783 of 828
TM 9–2350–311–20–2
Change 2
F–3
Table F–1 TORQUE LIMITS FOR WET FASTENERS
SIZE
TORQUE
SAE GRADE
NO. 1 OR 2
SAE GRADE
NO. 5
SAE GRADE
NO. 6 OR 7
SAE GRADE
NO. 8
DIA.
IN.
THREADS
PER INCH
DIA
MM
LB–FT
N
•
M
POUND–
FEET
N
•
M
LB–FT
N
•
M
LB–FT
N
•
M
1/4
20
6.35
4.9
6.64
7.2
9.76
9.0
12.20
10.8
14.64
1/4
28
6.35
5.4
7.32
9.0
12.20
–
–
12.6
17.09
5/16
18
7.94
9.9
13.42
15.3
20.75
17.1
23.19
21.6
29.30
5/16
24
7.94
11.7
15.87
17.1
23.18
–
–
24.3
32.95
3/8
16
9.53
16.2
21.97
27.9
37.83
30.6
41.49
39.6
53.70
3/8
24
9.53
18.0
24.41
31.5
42.71
–
–
44.1
59.80
7/16
14
11.11
25.2
34.17
44.1
59.80
49.5
67.12
63.0
85.43
7/16
20
–
27.0
36.61
49.5
67.12
–
–
70.2
95.19
1/2
13
12.70
35.1
47.60
67.5
91.53
76.5
103.73
94.5
128.14
1/2
20
–
36.9
50.04
76.5
103.73
–
–
108.0
146.45
9/16
12
14.29
45.9
62.24
99.0
134.24
108.0
146.45
139.5
189.16
9/16
18
–
49.5
67.12
108.0
146.45
–
–
153.0
207.47
5/8
11
15.88
56.7
76.89
135.0
183.06
150.3
203.81
189.0
256.28
5/8
18
–
85.5
115.94
153.0
207.47
–
–
216.0
292.90
3/4
10
19.05
94.5
128.14
243.0
329.51
252.0
341.71
337.5
457.65
3/4
16
–
103.5
140.35
265.5
360.02
–
–
378.0
512.57
7/8
9
22.23
144.0
195.26
355.5
482.06
396.0
536.98
544.5
738.34
7/8
14
–
157.5
213.57
391.5
530.87
–
–
607.5
823.77
1
8
25.40
211.5
286.79
531.0
720.04
594.0
805.46
819.0
1110.56
1
14
–
225.0
305.10
594.0
805.46
–
–
891.0
1208.20
1–1/8
–
25.58
–
–
720.0
976.32
–
–
1152.0
1562.11
792.0
1073.95
1296.0
1757.38
1–1/4
–
31.75
–
–
–
–
–
–
1638.0
2221.13
1800.0
2440.80
1–3/8
–
34.93
–
–
1314.0
1781.78
–
–
2142.0
2904.55
1512.0
2050.27
2448.0
3319.49
1–1/2
–
38.10
–
–
1746.0
2367.58
–
–
2844.0
3856.46
1980.0
2684.88
3204.0
4344.62
Back to Top
