TM 10-6640-239-13
G-1/(G-2 blank)
APPENDIX G
TORQUE TABLE
Section I. INTRODUCTION
G-1.
GENERAL.
Use a torque wrench to check torque or tighten nuts and capscrews to specified torque. Special torque values are identified in
the maintenance procedures. Standard torque values shown should be used for other threaded fasteners. Refer to table G1.
STANDARD CAPSCREW MARKINGS AND TORQUE
Current Usage
Much Used
Much Used
Used at Times
Used at Times
Minimum
Tensil
Strength
PSI
MPa
To 1-2-69,000 (476)
To 3/4-64,000 (421)
To 1-55,000 (379)
To 3/4-120,000 (827)
To 1-115,000 (793)
To 5/8-140,000 (965)
To 3/4-133,000 (917)
150,000 (1034)
Quality of Material
Intermediate
Minimum Commercial
Medium Commercial
Best Commercial
SAE Grade Number
1 or 2
5
6 or 7
8
Capscrew Body Size
(Inches) - (Thread)
Torque
Ft.-Lb (N-m)
Torque
Ft.-Lb (N-m)
Torque
Ft.-Lb (N-m)
Torque
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)
3/8-16
18(24)
31(42)
34(46)
44(60)
-24
20(27)
35(47)
49(66)
7/17-14
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)
5/6-11
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)
1.
Always use the torque values listed above when definite specifications are not available.
Note: Do not use standard values in place of those specified in other sections of this manual; special attention should be observed when
using SAE Grade 6, 7, and 8 capscrews.
2.
The above is based on use of clean and dry threads.
3.
Reduce torque by 20% if new plated capscrews are used.
Caution: Capscrews threaded into aluminum may require reductions in torque by 30% or more, unless inserts are used.
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