Brief Description: Flap - Rivet rib and spar doublers.
Easy task here. Rivet doublers to rib and spar. I put all the shop heads on the thicker doubler side. I used a platenut rivet (opps rivet) on one side of the platenut. If you look closely, your'll see that the manufactured head is not flat. It has a round bump on the center. This bump prevents the head from setting down flush in the counter sink after squeezing. It's slightly proud. What's up with that?.
