Pretty sure you have nut plates. They may have lost their pinch on the screw over the years, but this can be controlled with BLUE locktite. Donít use the red locktite - thatís used on fasteners you donít want to be able to remove - like on engine case studs. If your wheel pant nut plates are stripped, youíll need to drill them out and replace them. Not difficult, but if you damage the adjacent fiberglass material while drilling out the platenut you might find yourself glassing over the buggered up existing platenut rivet attach holes and then using a platenut jig to drill new platenut attach rivets - again very easy if you have the tools.
RV6/2001 built/sold 2005
RV8 Fastback/2008 built/sold 2015
RV4/bought 2019 Flying