Schaller M6 Pin Guitar Tuning Machine
The Schaller M6 Pin guitar tuning machine sets a benchmark for closed-type tuners, delivering smooth operation and exceptional tuning stability. Featuring a refined 1:18 gear ratio, it provides precise and sensitive adjustment for demanding musical applications.
Constructed with high-precision CNC-machined components and premium brass string posts, the M6 Pin utilizes a self-locking drive and permanent special grease lubrication for maintenance-free performance. The innovative stepped M6 flanged washer centers the string post reliably through the banjonut, eliminating tilting torque and protecting the headstock.
Engineered with a dual-pin mounting configuration, this tuning machine features a 0.39-inch (10 mm) center-to-center pin spacing and a 0.31-inch (8 mm) spacing from the pins to the post center for seamless installation.
| Brand | Schaller |
| Series | M6 Series |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Pin Spacing (Center-to-Center) | 0.39 in |
| Distance Between Pins and Post Center | 0.31 in |
| Button Bore Hole Diameter | 0.17 in (with 0.14 in driving surface) |
| String Post Material | Brass |
| Lubrication | Permanently lubricated with special grease |
| Weight per Single Tuner with Button (Small/Large) | Metal (1.27 oz / 1.34 oz), Perloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) |
| Included Hardware | Banjonuts, stepped flanged washers, mounting screws (M2.2 x 9.5) |




















