TM 5-2330-325-14&P
TORQUE VALUES FOR THREADED FASTENERS
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Paragraph Title
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Scope .............................................................................................................................. H-1
General ............................................................................................................................ H-1
Torque Limits ................................................................................................................... H-1
How to Use Torque Table ................................................................................................ H-2
Tightening Metal Fasteners. ............................................................................................ H-4
Fastener Size and Thread Pattern .................................................................................. H-5
Fastener Grade .............................................................................................................. H-6
This appendix lists standard torque values, as shown in Table H-1, and provides general
information for applying torque. Special torque values and tightening sequences are indicated in
the maintenance procedures for applicable components.
a.
Always use the torque values listed in Table H-1 when the maintenance procedure does not give a
specific torque value.
Unless otherwise indicated, standard torque tolerance shall be + 10%.
b.
c.
Torque values listed are based on clean, dry threads. Reduce torque by 10% when engine oil is
used as a lubricant. Reduce torque by 20% if new plated capscrews are used.
d.
Capscrews threaded into aluminum may require reductions in torque of 30% or more of Grade 5
capscrew torque. Capscrew threaded into aluminum must also attain two capscrew diameters of
thread engagement.
CAUTION
If replacement capscrews are of higher grade than originally supplied, use torque
specifications for the original. This will prevent equipment damage due to overtorquing.
TORQUE LIMITS.
applied to threads. Table H-2 (p. H-4) lists wet torque limits, which are used on screws that have
high-pressure lubricants applied to threads.
