Question I am thinking of attaching Nova pedals to a pedalboard and was wondering if I could use the threaded screw holes that appear in 2 of the 4 "feet" on the bottom of each pedal. What is the thread specification/screw size

It is possible to use these holes for fixing the pedal to your board. We recommend that the screw does not enter more than 3 MM inside the bottom-plate to avoid any contact with the mainboard. The size of the screws is M3.