Originally Posted by
Steve_sr
I didn't trust threads into aluminum for multiple assembly/disassembly so there is a steel nut that is epoxied inside the aluminum box.
Good man. I was hoping as such, but couldn't see inside the box section. If the nut comes loose, I'd recomment a rivet nut or rivnut, it works like a hollow wall anchor but for greater loads. Wiki page shows them, but not crimped in place. I've used for applications where the original threading into thin aluminum stripped. Permanent fix.