TM 9-2320-302-34
0123 00-2
Table 1. Torque Limits.
CURRENT USAGE
MUCH USED
MUCH USED
USED AT TIMES
USED AT TIMES
QUALITY OF
MATERIAL
INDETERMINATE
MINIMUM
COMMERCIAL
MEDIUM
COMMERCIAL
BEST
COMMERCIAL
SAE Grade Number
1 or 2
5
6 or 7
8
Cap screw Head
Markings
Manufacturer’s
marks may vary
These are all
SAE Grade 5
(3 line)
CAP SCREW BODY SIZE
INCHES - THREAD
TORQUE
LB-FT - (NM)
TORQUE
LB-FT (NM)
TORQUE
LB-FT (NM)
TORQUE
LB-FT (NM)
1/4
20
28
5
(7)
6
(8)
8
(11)
10
(14)
10
(14)
12
(16)
14
(19)
5/16
18
24
11
(15)
13
(18)
17
(23)
19
(26)
19
(26)
24
(33)
27
(37)
3/8
16
24
18
(24)
20
(27)
31
(42)
35
(47)
34
(46)
44
(60)
49
(66)
7/16
14
20
28
(38)
30
(41)
49
(66)
55
(75)
55
(75)
70
(95)
78
(106)
1/2
13
20
39
(53)
41
(56)
75
(102)
85
(115)
85
(115)
105
(142)
120
(163)
9/16
12
18
51
(69)
55
(75)
110
(149)
120
(163)
120
(163)
155
(210)
170
(231)
5/8
11
18
83
(113)
95
(129)
150
(203)
170
(231)
167
(226)
210
(285)
240
(325)
3/4
10
16
105
(142)
115
(156)
270
(366)
295
(400)
280
(380)
375
(508)
420
(569)
7/8
9
14
160
(217)
175
(237)
395
(536)
435
(590)
440
(597)
605
(820)
675
(915)
1
8
14
235
(319)
250
(339)
590
(800)
660
(895)
660
(895)
910
(1234)
990
(1342)
