Schaller M6 Pin Guitar Tuning Machine
The Schaller M6 Pin guitar tuning machine sets an industry benchmark with its advanced 1:18 gear ratio, delivering precise, velvety smooth tuning performance and exceptional stability. Precision CNC-machined components and high-grade brass string posts ensure wear-free operation and long-lasting reliability for solid headstock instruments.
Featuring the innovative stepped M6 flanged washer, this tuner simplifies installation while reliably centering the string post directly through the banjo bolt. This engineering design eliminates tilting torque and removes mechanical strain from both the string post and rear mounting screws without requiring stepped peghead bore holes.
Equipped with permanent internal lubrication via specialized grease, the sealed housing provides completely maintenance-free functionality. The dual-pin mounting configuration offers a secure fit with a precise 0.39 in center-to-center pin spacing and 0.31 in post-to-pin offset.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| String Post Material | Brass |
| 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 |
| Weight per Single Unit (Small / Large Button) | Metal (1.27 oz / 1.34 oz), Pearloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) |
| Product Weight | 0.13 lb |
| Lubrication | Maintenance-free permanent lubrication |




















