TM 1-1500-204-23-6
Figure 2-19. Channel Assemblies
Figure 2-20. Engine Self-Locking Nut
•
It may occasionally be necessary to remove the nut from the bolt to assure that the shank of the bolt has
extended through the work.
•
Use MS21083 nuts in shear applications only.
•
Do not use self-locking nuts at joints in control systems when movement of the joint may result in motion of
the nut relative to the surface against which it is bearing.
•
Self-locking nuts may be used with antifriction bearings and control pulleys provided the inner race of the
bearing is clamped to the supporting structures by the nut and bolt.
•
Attachment of nuts will be accomplished so removal and replacement may be completed without injury to
the structure.
CAUTION
Self-locking castellated nuts (MS17825 and MS17826) shall be safetied with a
cotter pin or lockwire. The nonmetallic insert is not the primary safetying feature
of these nuts.
•
Because of the nonmetallic insert, the self-locking castellated nuts (MS17825 and MS17826) can be
reused, but only after having equaled the minimum breakaway torque value for the applicable size nut, as
given in table 2-8.
2-30
