TM 9-2320-280-34
TORQUE LIMITS
D. GENERAL
This section provides general torque limits for screws used on the M998 series vehicles. Special torque limits
are indicated in the maintenance procedures for applicable components. The general torque limits given in this
appendix shall be used when specific torque limits are not indicated in the maintenance procedure. Unless
otherwise specified, standard torque tolerance shall be + 10 percent. These general torque limits cannot be
applied to screws that retain rubber components. The rubber components will be damaged before the correct
torque limit is reached. If a special torque limit is not given in the maintenance instructions, tighten the screw
or nut until it touches the metal bracket, then tighten it one more turn.
D2. TORQUE LIMITS
Table D-1 lists dry torque limits. Dry torque limits are used on screws that do not have lubricants applied to the
threads. Table D-2 lists wet torque limits. Wet torque limits are used on screws that have high pressure
lubricants applied to the threads.
D-3. HOW TO USE TORQUE TABLE
c.
Under the heading SIZE, look down the
left-hand column until you find the diameter
of the screw you are installing (there will
usually be two lines beginning with the
same size).
d.
In the second column under SIZE, find the
number of threads per inch that matches
the number of threads you counted in step
CAPSCREW HEAD MARKINGS
Manufacturer's marks may vary.
a.
Measure the diameter of the screw you are
These are all SAE Grade 5
installing.
(3-line).
e.
To find the grade of screw you are
installing, match the markings on the head
to the correct picture of CAPSCREW
HEAD MARKINGS on the torque table.
f.
Look down the column under the picture
you found in step e. until you find the
torque limit (in lb-ft or N.m) for the
b.
Count the number of threads per inch.
diameter and threads per inch of the screw
you are installing.
