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TM 9-5130-338-12&P
APPENDIX E
TORQUE VALUES FOR THREADED FASTENERS
This appendix lists the torque values for threaded fasteners. Follow the torque values as specified in the procedures
throughout this manual. When no torque value is given, use the following guides. The guides are based on using clean,
dry threads.
NOTE
·
Reduce torque by 10 percent (%) when lubricating oil is used on threads (wet torque).
·
Reduce torque by 20% when installing new threaded fasteners.
·
Reduce torque by 30% when threading screw into aluminum, unless inserts are used.
Table E-1. STANDARD TORQUE VALUE GUIDE.
Screw
Torque A-
Torque B-
Torque C
Socket
Diameter
No Dashes
3 Dashes
6 Dashes
Size
(SAE* Grade No. 2)
(SAE Grade No. 5)
(SAE Grade No. 8)
lb-ft**
N•m***
lb-ft
N•m
lb-ft
N•m
1/4-20 UNC
3-5
4.1-6.8
6-8
8.1-10.8
10-12
13.6-16.3
7/16
1/4-28 UNF
4-6
5.4-8.1
8-10
10.8-13.6
9-14
12.2-19.0
7/16
5/16-18 UNC
7-11
9.5-14.9
13-17
17.6-23.0
19-24
25.8-32.5
1/2
5/16-24 UNF
7-11
9.5-14.9
14-19
19.0-25.8
23-28
31.2-38.0
1/2
3/8-16 UNC
14-18
19.0-24.4
26-31
35.3-42.0
39-44
52.9-59.7
9/16
3/8-24 UNF
15-19
20.3-25.8
30-35
40.7-47.5
46-51
62.4-69.1
9/16
7/16-14 UNC
23-28
31.2-38.0
44-49
59.7-66.4
65-70
88.1-94.9
5/8
7/16-20 UNF
23-28
31.2-38.0
44-54
59.7-73.2
69-79
93.6-107.1
5/8
1/2-13 UNC
32-37
43.4-50.2
65-75
88.1-101.7
95-105
128.8-
3/4
142.4
1/2-20UNF
34-41
46.1-55.6
73-83
99.0-112.5
113-123
153.2-
3/4
166.8
9/16-12 UNC
46-55
62.4-74.6
100-110
135.6-149.1
145-155
196.6-
13/16
210.1
9/16-19 UNF
47-57
63.7-77.3
107-117
145.1-158.6
165-175
223.7-
13/16
237.3
5/8-11 UNC
62-72
84.1-97.6
140-150
189.8-203.4
200-210
271.2-
15/16
284.7
5/8-18 UNF
67-77
90.8-104.4
153-163
207.4-221.0
235-245
318.6-
15/16
332.2
3/4-10 UNC
106-116
143.7-157.3
260-270
352.5-366.1
365-375
494.9-
1-1/4
508.4
E-1
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