In the shop manual it states that 1422 is used for wheel only. I guess so it would not be metal to metal if you do not have a tire mounted on the rim. It states that on all three of the diagrams that break down the spare tire carrier.
Eddie,
81 F100 Custom SWB, 5.0L, 4x2, Single Rail Four-Speed Overdrive, 3.00 Non-Limited Slip Rear Axle, Non A/C truck to complete 85 F150 factory A/C conversion, Nutmeg interior color.