TM 5-3895-383-24
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 Nm (41 7 lb-ft)
M12
100 20 Nm (75 15 lb-ft)
M14
160 30 Nm (120 22 lb-ft)
M16
240 40 Nm (175 30 lb-ft)
M20
460 60 Nm (340 44 lb-ft)
M24
800 100 Nm (590 75 lb-ft)
M30
1600 200 Nm (800 1560 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 Nm (48 7 lb-ft)
M16
110 20 Nm (75 15 lb-ft)
M20
170 30 Nm (125 22 lb-ft)
M24
400 60 Nm (300 44 lb-ft)
M30
750 80 Nm (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 Nm (50 11 lb-ft)
1/2
105 20 Nm (75 15 lb-ft)
9/16
160 30 Nm (120 22 lb-ft)
5/8
215 40 Nm (160 30 lb-ft)
3/4
370 50 Nm (275 37 lb-ft)
7/8
620 80 Nm (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
