+1 Yes they do. Rivnuts are a good solution when you have limited access to install acual nutplates. A drop of JB Weld can help the Rivnuts from loosening and spinning too... even keyed Rivnuts. Just be careful not to get any JB Weld inside the threads but a tap can always be used to clear the threads.Keyed Rivnuts will also work.
The plans call for three #6X1/2" SS sheet metal screws plus a AN509-8R8 that corresponds to an existing hole for the bottom wing root faring that gets overlapped by the upper intersection faring. See figure 1 on page 48-12.
The plans call for three #6X1/2" SS sheet metal screws plus a AN509-8R8 that corresponds to an existing hole for the bottom wing root faring that gets overlapped by the upper intersection faring. See figure 1 on page 48-12.