TM 9-2330-390-14&P
CAUTION
If replacement capscrews are of higher grade than originally supplied, use torque
specifications for the original. This will prevent equipment damage due to
overtorquing.
Table H-1. Torque Limits.
Current Usage
Quality of
Material
SAE Grade Number
Capscrew Head
Markings
5
6 or 7
8
Manufacturer’s
marks may vary
These are all
SAE Grade 5
(3 line)
Much Used
Indeterminate
1 or 2
Much Used
Minimum
Commercial
Used at Times
Medium
Commercial
Used at Times
Best
Commercial
Capscrew Body Size
Inches - Thread
1/4
20
28
5/16
18
24
3/8
16
24
7/18
14
20
1/2
13
20
9/16
12
18
5/8
11
18
3/4
10
16
9
7/8
14
1
8
14
Torque
lb.-ft (Nom)
5
(7)
6
(8)
11
(15)
13
(18)
18
(24)
20
(27)
28
(38)
30
(41)
39
(53)
41
(56)
51
(69)
55
(75)
83
(113)
95
(129)
105
(142)
115
(156)
160
(217)
(217)
175
235
(319)
250
(339)
Torque
lb.-ft. (Nom)
8
(11)
10
(14)
17
(23)
19
(26)
31
(42)
35
(47)
49
(66)
55
(75)
75
(102)
85
(115)
110
(149)
120
(163)
150
(203)
170
(231)
270
(366)
295
(400)
395
(536)
435
(590)
590
(800)
660
(895)
Torque
lb.-ft. (Nm)
10
(14)
19
(26)
34
(46)
55
(75)
85
(115)
120
(163)
167
(226)
280
(380)
440
(597)
660
(895)
Torque
lb.-ft. (Nom)
12
(16)
14
(19)
24
(33)
27
(37)
44
(60)
49
(66)
70
(95)
78
(106)
105
(142)
120
(163)
155
(210)
170
(231)
210
(285)
240
(325)
375
(508)
420
(569)
605
(820)
675
(915)
910
(1234)
990
(1342)
H-2
