TM 5-3895-382-24
Specifications Section
General Torque Information
SMCS Code: 7553
Mismatched or incorrect fasteners can result in damage or
malfunction, or possible injury.
Take care to avoid mixing metric dimensioned fasteners
and inch dimensioned fasteners.
Exceptions to these torques are given in the Service Manual, if
necessary.
Prior to installation of any hardware, ensure that components
are in near new condition. Bolts and threads must not be worn
or damaged. Threads must not have burrs or nicks. Hardware
must be free of rust and corrosion. Clean the hardware with a
noncorrosive cleaner. Do not lubricate the fastener threads
except for the rust preventive. The rust preventive should be
applied by the supplier of that component for purposes of
shipping and storage. Other applications for lubricating
components may also be specified in the Service Manual.
Standard Torque for Metric Fasteners
SMCS Code: 7553
Table 1
Metric Nuts and Bolts
Thread Size
Metric
Standard Torque
M6
12 ± 3 Nm (9 ± 2 lb-ft)
M8
28 ± 7 Nm (21 ± 5 lb-ft)
M10
55 ± 10 N m (41 ± 7 lb-ft)
M12
100 ± 20 N m (75 ± 15 lb-ft)
M14
160 ± 30 N m (120 ± 22 lb-ft)
M16
240 ± 40 N m (175 ± 30 lb-ft)
M20
460 ± 60 N m (340 ± 44 lb-ft)
M24
800 ± 100 Nm (590 ± 75 lb-ft)
M30
1600 ± 200 Nm (1180 ± 150 lb-ft)
M36
2700 ± 300 Nm (2000 ± 220 lb-ft)
Table 2
Metric Taperlock Studs
Thread Size
Metric
Standard Torque
M6
8 ± 3 Nm (6 ± 2 lb-ft)
M8
17 ± 5 Nm (13 ± 4 lb-ft)
M10
35 ± 5 Nm (26 ± 4 lb-ft)
M12
65 ± 10 N m (48 ± 7 lb-ft)
M16
110 ± 20 N m (80 ± 15 lb-ft)
M20
170 ± 30 N m (125 ± 22 lb-ft)
M24
400 ± 60 N m (300 ± 44 lb-ft)
M30
750 ± 80 N m (550 ± 60 lb-ft)
M36
1200 ± 150 Nm (880 ± 110 lb-ft)
Standard Torque for Inch Fasteners
SMCS Code: 7553
Table 3
Inch Nuts and Bolts
Thread Size
Inch
Standard Torque
1/4
12 ± 3 Nm (9 ± 2 lb-ft)
5/16
25 ± 6 Nm (18 ± 4 lb-ft)
3/8
47 ± 9 Nm (35 ± 7 lb-ft)
7/16
70 ± 15 N m (50 ± 11 lb-ft)
1/2
105 ± 20 N m (75 ± 15 lb-ft)
9/16
160 ± 30 N m (120 ± 22 lb-ft)
5/8
215 ± 40 N m (160 ± 30 lb-ft)
3/4
370 ± 50 N m (275 ± 37 lb-ft)
7/8
620 ± 80 N m (460 ± 60 lb-ft)
1
900 ± 100 Nm (660 ± 75 lb-ft)
1 1/8
1300 ± 150 Nm (960 ± 110 lb-ft)
1 1/4
1800 ± 200 Nm (1320 ± 150 lb-ft)
1 3/8
2400 ± 300 Nm (1780 ± 220 lb-ft)
1 1/2
3100 ± 350 Nm (2280 ± 260 lb-ft)
4-4
