Here you can see the switch box I made and how the screws I made will be used. Details on the switch box, are, I used a slice of 1.5" ABS pipe, and heated it with a heat gun, to soften it enough to form it into a rectangle. I then cut and shaped pieces to form a top and a bottom. The top has holes drilled in it to hold the switches, and for mounting screws to hold it to the box.