This has been done before but I thought I'd share anyways. I just finished up a build that called for direct mounted pickups. I wanted these to be adjustable but more importantly I also wanted to preserve the threads in the pickup baseplate tab threads that normally get screwed up or drilled out by using regular wood screws to mount the pickups just in case I ended up pulling them out for any reason.
I ended up using 2-56 Brass screw-to-expand inserts along with matching half inch 2-56 thread pan head screws from McMaster-Carr. These simply press into an eight inch pilot hole and are rei