TM 5-5420-234-14&P
TORQUE VALUES
I-1.
GENERAL.
This appendix provides general torque limits for screws used on the CBT. Special torque limits are shown in the
maintenance procedures for applicable components. Use the general torque limits given in this appendix when specific
torque limits are not given in the maintenance procedures. These general torque limits cannot be applied to screws that
retain rubber components. The rubber components will be damaged before the torque limit is reached.
I-2.
TORQUE LIMITS.
Table I-1 lists dry torque limits. Dry torque limits are used on screws that do not have lubricants applied to the threads.
Table I-2 lists wet torque limits. Wet torque limits are used on screws with high pressure lubricants applied to threads.
Table I-3 lists dry torque limits for metric screws. Table I-4 lists wet torque limits for flange nuts.
I-3.
USE OF TORQUE TABLES.
a.
Measure the diamter of the screw you are installing.
b. Count the number of threads per inch.
c.
Under the heading DIAMETER look down the column until you find the diameter of the screw. (There are
usually two lines beginning with the same diameter.)
NOTE
Step (4) is not required for metric screws.
d. Under the heading THREADS PER INCH, find the number of threads per inch that matches the number you
counted in Step (2).
e.
To find the grade of the screw, match the markings on the head of the screw to the correct picture under
CAPSCREW HEAD MARKINGS on the torque table.
f.
Look down the column under the picture you found in Step (5) until you find the torque limit (lb-ft or Nm)
for the diameter and threads per inch of the screw.
