Schaller M6 Pin Guitar Tuning Machine
The Schaller M6 Pin guitar tuning machine sets an industry benchmark for closed tuners, featuring an upgraded 1:18 gear ratio for ultra-precise and smooth tuning comfort. All internal components are precision CNC-machined and surface-treated, utilizing a self-locking drive mechanism to ensure consistent, stable, and fine-tuned pitch adjustment.
Engineered for enduring durability, the tuner posts are made of high-grade brass fitted precisely into the housing to maximize tuning stability and eliminate mechanical wear. The unit is permanently lubricated with Schaller special grease, providing a completely maintenance-free operation over its lifespan.
Installation is streamlined through an innovative stepped M6 flanged washer, measuring 0.4 in (10 mm), which reliably centers the string post via the banjo bolt without requiring a stepped peghead bore. This design eliminates tilting torque and absorbs physical stress from both the post and mounting points.
| Brand | Schaller |
| Product Line | M6 Series |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| String Post Material | Brass |
| Stepped Flanged Washer Diameter | 0.4 in |
| Pin Spacing (Center to Center) | 0.4 in |
| Pin to Center of Post Distance | 0.3 in |
| Button Bore Hole Diameter | 0.2 in |
| Button Drive Surface Width | 0.1 in |
| Weight per Single Unit (Metal Button) | 0.08 lb / 0.08 lb (small/large) |
| Weight per Single Unit (Perloid Button) | 0.07 lb / 0.07 lb (small/large) |
| Weight per Single Unit (Ebony Button) | 0.07 lb / 0.07 lb (small/large) |
| Product Weight | 0.8 lb |



















