TM 9-3950-253-13&P
FIELD MAINTENANCE
TORQUE LIMITS
SCOPE
This work package lists standard torque values and provides general information for applying torque. Special
torque values and tightening sequences are indicated in the maintenance procedures for applicable components.
GENERAL
1.
Always use torque values listed in Tables 1 and 2 when a maintenance procedure does not give a
specific torque value.
Table 1 provides torque limits for SAE standard fasteners.
Table 2 provides torque limits for metric fasteners.
2.
Unless otherwise indicated, standard torque tolerance shall be 10 percent.
3.
If the maintenance procedures do not specify a tightening order, use the following guides:
Unless otherwise specified, lubricate threads of fasteners with clean oil (OE/HDO-10).
When tightening fasteners above 30 lb-ft (41 Nm), use the torque pattern but only tighten to 70
percent of final value (multiply final value by 0.7). Repeat pattern until final value is reached.
Tighten circular patterns using circular torque pattern and tighten straight patterns using straight
torque pattern.
Figure 1. Torque Patterns.
03/15/2011Rel(1.10)root(torquewp)wpno(M582103)