This is the best switch to use for Coil tapping and phase reversals- No middle position- this is ON-ON. As a DPDT switch you can coil tap a pair of humbuckers or use two switches for each position.
Each switch has two hex nuts, a flat washer and a lock washer. Threaded portion is 5/16" tall. 1/4"-diameter mounting hole and 5/8" body cavity depth are required.