UPDATE: These Free-Lock hubs are still available.

(11/18/2020) This ebay ad for Free-Lock hubs provides the most detailed pics I have for this version of the hub. These are 27 spline, which means they were produced after 1972? If that’s the case, then for some reason the Free-Lock brand that was abandoned circa 1959 was resurected for these hubs.

View all the information on eBay

“Vintage Free-Lock Locking Hubs Jeep CJ CJ5 27 Spline – Warn 9062 – 27 Spline (Wanted: new old stock locking hubs in small or large quantities)
Used
Engage and disengage properly
Same application as Warn 9062
Heavy duty hubs
6 Bolt
27 Spline”