Use the screw that came off the Les Paul....use a bench grinder to remove a tad bit on the entire diameter of the screw, just enough so it will fit thru the Schaller button & your set. The amount that you have to take off the screw head is minimal.
When done, you have the original Gibson screw holding in your new Schaller strap locks. Works perfectly & there is no way the modified screw will pull thru the button as you have only taken of a small amount of the screw head.
Did it on my Epiphone Les Paul & it works perfect. The screw size is exactly the same on the Gibson.
Anyhoo...for what it's worth.
