TM 9-4520-271-14
0048 00
TORQUE TABLES - Continued
NOTE
Manufacturer's marks may vary. Standard is all SAE Grade 5 (3-line). Metric screws are of three grades:
8.8, 10.9, and 12.9. Grades and manufacturer's marks appear on the screw head.
5.
To find the grade screw being installed, match markings on screw head to correct picture of CAPSCREW HEAD
MARKINGS in illustration preceding respective torque table.
Table 1. Standard Dry Torque Limits.
SAE GRADE
SAE GRADE
SAE GRADE
SAE GRADE
SIZE
NO. 2
NO. 5
NO. 6 OR 7
NO. 8
THREADS
DIA
PER
DIA
NM
LB-FT
NM
LB-FT
NM
LB-FT
NM
LB-FT
MM
IN.
IN.
1/4
20
6.35
5
7
8
11
10
14
12
16
1/4
28
6.35
6
9
10
14
12
16
14
19
5/16
18
7.94
11
15
17
23
21
28
25
34
5/16
24
7.94
12
16
19
26
24
33
25
34
3/8
16
9.53
20
27
30
41
40
54
45
61
3/8
24
9.53
23
31
35
47
45
61
50
68
7/16
14
11.11
30
41
50
68
60
81
70
95
7/16
20
35
47
55
75
70
95
90
108
1/2
13
12.70
50
68
75
102
95
129
110
149
1/2
20
55
75
90
122
100
135
120
163
9/16
12
14.29
65
85
110
149
135
183
150
203
9/16
18
75
102
120
163
150
203
170
231
5/8
11
15.88
90
122
150
203
190
258
220
298
5/8
18
100
136
180
244
210
285
240
325
0048 00-2
