Schaller M6 Pin Guitar Tuning Machine
The Schaller M6 Pin guitar tuning machine sets an industry benchmark for precision, tuning comfort, and long-lasting stability. Engineered with an upgraded 1:18 gear ratio, it delivers an exceptionally smooth, accurate, and reliable tuning experience across all styles of play.
Every component is precision CNC-machined and surface-treated, featuring premium brass posts accurately fitted into the housing to eliminate wear and ensure absolute stability. High-grade Schaller special grease provides permanent internal lubrication, making the fully enclosed housing completely maintenance-free.
Equipped with an innovative stepped M6 flanged washer, this tuner reliably centers the string post via the banjo bolt without requiring step-drilled headstock holes. This design eliminates tilting torque, relieving pressure from both the post and rear mounting screws for seamless installation and enduring structural integrity.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| 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) including hollow screw |
| Button Bore Hole | 0.17 in diameter with 0.14 in drive flat |
| Pin Spacing (Center to Center) | 0.39 in |
| Distance from Pins to Post Center | 0.31 in |
| Lubrication | Permanent grease lubrication, maintenance-free |




















