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TM 9-2330-394-13&P
TORQUE LIMITS - Continued
0180 00
Table 1. Dry Torque Limits for SAE and ANSI Screws and Free Spinning Nuts.
Material Grade Markings
NOTE
Manufacturer's marks
may vary. These are all
SAE Grade 5.
SAE Grade 8
SAE Grade 2
SAE Grade 5
Diameter
Threads
Torque
per inch
inch
lb-ft
Nm
lb-ft
Nm
lb-ft
Nm
1/4
20
3-5
5-7
5-7
8-10
8-10
10-14
1/4
28
4-6
5-7
6-8
9-11
8-12
12-16
1/4
32
4-6
5-7
7-9
9-11
9-13
12-16
5/16
18
7-9
9-13
11-15
15-21
15-21
21-29
5/16
24
8-10
11-15
12-16
17-23
17-23
24-32
5/16
32
9-11
12-16
14-18
18-24
19-25
27-34
3/8
16
13-17
17-23
20-26
27-35
28-38
38-50
3/8
24
15-19
20-26
22-30
31-41
32-42
43-57
3/8
32
15-21
21-27
24-32
33-43
33-45
55-61
7/16
14
20-28
28-38
32-42
43-57
44-60
61-81
7/16
20
23-31
31-41
35-47
48-64
49-67
68-90
7/16
28
25-33
33-45
37-51
51-69
54-72
73-97
1/2
13
32-42
43-57
49-65
66-88
68-92
93-123
1/2
20
35-47
48-64
55-73
74-98
77-103
105-139
1/2
28
38-50
51-67
58-78
79-105
82-110
111-149
9/16
12
55-61
62-82
70-94
95-127
98-132
134-178
9/16
18
50-68
69-91
78-104
105-141
109-147
149-199
0180 00-2
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