Schaller M6 Pin Guitar Tuning Machine
The Schaller M6 Pin tuning machine sets a benchmark for closed guitar tuners, combining precision engineering with outstanding tuning stability. Featuring an advanced 1:18 gear ratio, it ensures precise, velvet-smooth tuning and sensitive adjustments.
All components are CNC-machined to tight tolerances, surface-finished, and equipped with a self-locking drive. The high-grade brass string posts are accurately fitted into the housing to guarantee wear-free performance, while permanent factory lubrication with Schaller special grease keeps the mechanism entirely maintenance-free.
An innovative stepped M6 flanged washer centers the string post securely through the hollow screw without requiring a stepped peghead bore, eliminating tilting torque and reducing stress on mounting components.
| Brand | Schaller |
| Series | M6 Series |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| String Post Material | High-Grade Brass |
| Manufacturing | CNC-Machined |
| Lubrication | Permanently lubricated with Schaller special grease |
| Button Bore Hole | 0.17 in (4.2 mm) diameter with 0.14 in (3.6 mm) drive flat |
| Pin Spacing (Center to Center) | 0.39 in (10 mm) |
| Pin to Post Center Distance | 0.31 in (8 mm) |
| Weight per Single Tuner with Button (Small / Large) | Metal: 1.27 oz / 1.34 oz (36 g / 38 g); Perloid: 1.06 oz / 1.09 oz (30 g / 31 g); Ebony: 1.06 oz / 1.09 oz (30 g / 31 g) |
| Included Hardware | 6x Hollow screws, 6x Flanged washers, 6x Mounting screws (M2.2 x 9.5) |


















