u/AffectionateTaro9193

I work in a retail construction store and we also have 3 crews that do work in the area.

One of my guys pulled this out on a job and wants to get some for the store. 1-1/4" pan head, 4 threads per inch. I've spent some time looking but can't seem to find anything with that coarse of threads.

Any tips on where to pass through a 4ga power wire for an amp in the trunk? Do I have to make hole or is there somewhere existing I can pass it through?