A rare accessory indeed! In the days when some did not even lock their home doors, few would even consider buying a spare tire lock for their under bed pickup from their Chevrolet dealer. However, the 1937-50 Chevrolet / GMC Spare Tire Locking Device was available.
A brass nut replaced the long factory hexagon nut used on the original spare tire hook. Turning the key in the lock (you kept with the ignition key) retracted the inside pointer in the housing. Yes, at least one knee was usually on the ground to reach the lock! The wheel lug wrench then turned the special brass nut to release the long arm that holds the wheel and tire under the pickup bed. An ingenious devise to protect from losing a tire and wheel due to theft. It was 10 years before we at Jim Carter Truck Parts could find the total assembly for this article. Yes, they are out there. Keep looking!
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NOTE: The hook hangs from the bed rear cross sill.
Without the accessory lock.
Brass nut replaces the long metal hexagon nut.
The total assembly installed.
Cast iron lock. The key cylinder inside.
Note: The locking pin.
