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
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.