TM 9-2320-387-24-2
Table &I.
Torque Limits for Dry Fasteners.
CAPSCREW HEAD MARKINGS
TORQUE
SIZE
SAEGRADE
SAEGRADE
NO.1 or2
NO.5
SAEGRADE
NO.6or7
SAEGRADE
NO.8
DIA.
THREADS
DIA.
POUND
NEWTON
POUND
NEWTON
POUND
NEWTON
POUND
NEWTON
NCHES
PER INCH
MILLIMETERS
FEET
METERS
FEET
METERS
FEET
METERS
FEET
METERS
l/A
20
6.35
5
6.78
8
10.85
10
13.56
12
16.27
l/A
28
6.35
6
8.lA
10
13.56
-
-
1A
18.98
5/16
18
7.94
11
14.92
17
23.05
19
25.76
24
32.54
5/16
24
7.94
13
17.63
19
25.76
-
-
27
36.61
3/8
16
9.53
18
24.41
31
A2.04
34
46.10
A4
59.66
3/8
24
9.53
20
27.12
35
A7.46
-
-
49
66.M
7/16
14
11.11
28
37.97
A9
66.44
55
74.58
70
94.92
7/16
20
11.11
30
40.68
55
74.58
-
-
78
105.77
l/2
13
12.70
39
52.88
75
101.70
85
115.26
105
142.38
l/2
20
12.70
41
55.60
85
115.26
-
-
120
162.72
9/16
12
14.29
51
69.16
110
149.16
120
162.72
155
210.18
9/16
18
14.29
55
74.58
120
162.72
-
-
170
230.52
5/8
11
15.88
63
85.43
150
203.40
167
226.45
210
284.76
5/8
18
15.88
95
128.82
170
230.52
-
-
240
325.M
3/4
10
19.05
105
142.38
270
366.12
280
379.68
375
508.50
3/4
16
19.05
115
155.94
295
400.02
-
-
420
569.52
7/8
9
22.23
160
216.96
395
535.62
4AO
596.64
605
820.38
7/8
14
22.23
175
237.30
435
589.86
-
-
675
915.30
1
8
25.40
235
318.66
590
800.04
660
894.96
910
1233.96
1
14
25.40
250
339.00
660
894.96
-
-
990
1342~54
l-1/8
-
28.58
-
80s
108A.8-
-
-
1280-
1735.68
880
1193.3
1440
1952.64
l-1/4
-
31.75
-
-
1820-
2467.92
2000
2712.00
l-3/8
-
34.93
-
1460
1979.8-
-
-
2380-
3227.28
1680
2278.1
2720
3688.32
l-1/2
-
38.10
-
-
1940-
2630.6-
-
-
3160-
4284.96
2200
2983.2
3560
4827.36
E-2
