How do you fix a broken guitar strap?
Make the Screw Hole Tinier
The first method won't work with glue, but this method will need it. To start, use a small brush or Q-tip and take a little super glue. Brush it lightly on the interior of the strap button's hole. Once you're done with those steps, let the glue dry and repeat the process.
How do strap buttons work?
A strap button is a piece of hardware mounted to a guitar or other instrument, as an anchor point for attaching a strap. A strap allows the instrument to hang from the musician's shoulders, making it more comfortable to hold and play, especially when standing up.