Consider two stacked plates connected by some bolt, and the plates are supposed to be able to move independently.
Usually in such cases they are connected by rivets, and cannot be disassembled easily.
Is there a way to use a combination of bolts/washer/nuts instead?
I have tried these type of bolts with nuts inside:
but after only a few movements, the screw on the other end unscrews itself.
I think the issue is that after tightening, the bolt heads press hard on the plates, which is normal because you don't want play, but this also forces the screw to unscrew when moving the plates