Schaller M6 Large Metal Black Guitar Tuning Machines

Replacement Button for Schaller M6 Tuning Machines

The Schaller M6 Large Metal-Button Black is an official replacement part for Schaller M6 and M6 Mini closed-back tuning machines. When an original button is lost, scratched, or ready for a color change, this drop-in replacement restores the original feel without replacing the entire machine head. A 4.2 mm bore with a 3.6 mm driving surface matches the M6 post exactly, so existing screws can be reused.

Why Choose the Metal Button

At 9 g, this metal button is the heaviest option in the M6 range — heavier than Perloid (2 g), Ebony (3 g), Galalith (3 g), or Polybone (3 g) alternatives. That extra mass gives the tuning knob a smoother, more deliberate feel, useful for bass players making small, precise adjustments between songs. The black finish coordinates with other black hardware on the headstock.