Schaller M6 Pin Guitar Tuning Machine
The Schaller M6 Pin guitar tuning machine combines legendary design heritage with contemporary precision engineering. Built with a refined 1:18 gear ratio, it provides exceptionally smooth, reliable, and micro-accurate tuning action for modern players. Every component is CNC-machined to exact tolerances, delivering durable surface finishes and a self-locking drive mechanism that guarantees lasting pitch stability without slipping.
Crafted with premium brass string posts fitted tightly into closed housings, the M6 Pin eliminates excess mechanical play and resists wear over years of heavy use. The internal gearing is permanently lubricated with Schaller special grease, rendering the unit entirely maintenance-free while maintaining a velvety, responsive turning feel across all strings.
Installation is streamlined thanks to the innovative stepped M6 flanged washer, measuring 0.39 in (10 mm), which seats securely into standard headstock bores without requiring counterbore drilling. Dual rear positioning pins with 0.39 in (10 mm) center-to-center spacing ensure robust axis centering and prevent rotational movement, reducing stress on mounting hardware and headstock wood.
| Brand | Schaller |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Pin Spacing (Center-to-Center) | 0.39 in (10 mm) |
| Pin-to-Post Center Distance | 0.31 in (8 mm) |
| Washer Step Diameter | 0.39 in (10 mm) |
| Button Bore Hole Diameter | 0.17 in (4.2 mm) |
| Button Drive Flat | 0.14 in (3.6 mm) |
| Individual Unit Weight (Metal Button) | 1.3 oz / 1.3 oz (36 g / 38 g) |
| Individual Unit Weight (Perloid/Ebony Button) | 1.1 oz / 1.1 oz (30 g / 31 g) |
| Total Weight | 0.79 lb |
| Lubrication | Maintenance-free grease |
