Schaller M6 Pin Guitar Tuning Machine
The Schaller M6 Pin guitar tuning machine sets an industry benchmark for precision and stability. Engineered with a refined 1:18 gear ratio, it delivers an exceptionally smooth, accurate, and comfortable tuning experience. High-precision CNC-machined components with a self-locking drive ensure uniform, wear-free performance across all playing conditions.
Featuring solid brass posts fitted meticulously into the housing, these enclosed tuners provide superior pitch retention. The innovative stepped M6 flanged washer eliminates the need for stepped headstock drilling, centering the string post directly via the banjo bolt to reduce tilt torque and relieve mechanical strain on mounting components.
Each unit comes permanently lubricated with Schaller special grease for completely maintenance-free operation. Designed with a dual-pin configuration at a 0.39 in (10 mm) pin-to-pin distance and a 0.31 in (8 mm) spacing from the pin line to the post center, it offers direct compatibility for upgrading previous M6 single-pin models.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| 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) |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Product Weight | 0.79 lb (0.36 kg) |
| Individual Unit Weight (Metal Button Small/Large) | 1.27 oz / 1.34 oz (36 g / 38 g) |
| Individual Unit Weight (Perloid/Ebony Small/Large) | 1.06 oz / 1.09 oz (30 g / 31 g) |
| Lubrication | Schaller Special Grease, Maintenance-Free |




















