Mic / Web Cam Arm Mount 13.5 mm (Screw Mount)

This is a very simple peg in hole mount for a mic arm.  The opening is 13.5 mm in diameter.  The screw openings are 4.2 mm in diameter so they will take M4 or #8 pan head screws easily.  Slightly larger or smaller screws may also work, but larger will bite into the plastic a bit and smaller may be a little loose.