TM 9-2330-390-14&P
NOTE
Engine screw and bolt material grades are indicated by numbers punched on screw
and bolt heads. Prior to tightening, check material grade number.
Table H-2. Engine Torque Limits.
Grade
Nominal Diameter
in Millimeters
6
8
10
12
Standard Screw and Bolt
Torque
lb.-ft.
5.83 to 6.86
13.05 to 15.19
28.91 to 33.26
46.31 to 53.54
(N l
m)
(7.90 to 9.30)
(17.70 to 20.60)
(39.20 to 45.10)
(62.80 to 72.60)
Special Screw and Bolt
Torque
lb.-ft.
(N
l m)
7.23 to 8.33
(9.80 to 11.30)
17.33 to 20.28
(23.50 to 27.50)
35.47 to 41.22
(48.10 to 55.90)
57.15 to 66.52
(77.50 to 90.20)
H-3/(H-4 Blank)
