I don't have any pictures, sorry. It was my old house.
A thicker screw with thicker thread will 'bite' Better in the thin material if the door, just be careful not to over tighten. The screw is there to clamp the plinth until the glue goes off.
With all glues, most of the strength is in the way it's fixed. Two surfaces rested against each other will fail. If they're clamped, the bond is stronger.