Ignition Switch Internal Tooth Star Washer
This original style washer grips to the backside of the dash so that the ignition switch nut gets tighter and won't back out. Hard to find hardware.
Fits:
46-49 CJ-2A
49-53 CJ-3A
53-64 CJ-3B
55-71 CJ-5
46-64 Truck
46-64 Station Wagon
48-51 Jeepster
57-64 FC-150
57-64 FC-170