Which screw is used on the back of the Minx Min22? April 01, 2024 09:57 The screw on the back of the Minx Min22 speakers is a M6 x 14 countersunk screw. Related articles How do I install the Minx MIN22? What’s Included in the Box? What is a crossover? How can I remove and rotate the grille of my MINX speaker? What size screw thread is found on the bottom of the Yoyo (S)?