If the rivets securing the wall panels inside your Airstream rattle loose, you'll want some correctly-sized replacements. Both the head and mandrel are aluminum. Installed with a regular blind "pop" rivet tool. Prepare holes with a No.30 drill bit. Sold in packages of 100.
The Size 3 rivets are a good size for clamping two layers of interior skin. They have a grip range of .126" to .187" They are all aluminum. The Size 5 rivets are a good size for clamping one layer of interior skin to a rib. They have a grip range of .251" to .312".