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TM 5-2420-222-20-3
APPENDIX E
TORQUE LIMITS
CAPSCREW MARKING
Current Usage
Much Used
Much Used
Used at Times
Used at Times
Quality of
Minimum
Medium
Best
Material
Indeterminate
Commercial
Commercial
Commercial
SAE Grade Number
1 or 2
5
6 or 7
8
Capscrew Head
Markings
Manufacturer’s
marks may vary
These are all SAE
Grade 5 (3 line)
TORQUE VALUES
CAUTION
If replacement capscrews are of a higher grade than originally supplied, use torque specifications
for that placement. This will prevent equipment damage due to overtorquing.
Capscrew Body Size
Torque
Torque
Torque
Torque
(Inches) - (Thread)
Ft Lb (N•m)
Ft Lb (N•m)
Ft Lb (N•m)
Ft Lb (N•m)
1/4
20
5
(7)
8
(11)
10
(14)
12
(16)
28
6
(8)
10
(14)
14
(19)
5/16
18
11
(15)
17
(23)
19
(26)
24
(33)
24
13
(18)
19
(26)
27
(37)
318
16
18
(24)
31
(42)
34
(46)
44
(60)
24
20
(27)
35
(47)
49
(66)
7/16
14
28
(38)
49
(66)
55
(75)
70
(95)
20
30
(41)
55
(75)
78
(106)
1/2
13
39
(53)
75
(102)
85 (115)
105
(142)
20
41
(56)
85
(115)
120
(163)
9/16
12
51
(69)
110
(149)
120 (163)
155
(210)
18
55
(75)
120
(163)
170
(231)
5/8
11
83 (113)
150
(203)
167 (226)
210
(285)
18
95 (129)
170
(231)
240
(325)
3/4
10
105 (142)
270
(366)
280 (380)
375
(508)
16
115 (156)
295
(400)
420
(569)
7/8
9
160 (217)
395
(536)
440 (597)
605
(820)
14
175 (237)
435
(590)
675
(915)
1
8
235 (319)
590
(800)
660 (895)
910 (1234)
14
250 (339)
660
(895)
990 (1342)
E-1(E-2 blank)
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