Schaller M6 Pin Guitar Tuning Machine
The Schaller M6 Pin guitar tuning machine delivers outstanding tuning stability and velvety-smooth performance with an upgraded 1:18 gear ratio. Each component is precision CNC-machined and surface-finished, featuring high-grade brass string posts engineered for maximum wear resistance and consistent, backlash-free operation.
Equipped with an innovative stepped M6 flanged collar with a 0.39 in diameter, this tuner reliably centers the string post via the banjo bolt without requiring a stepped headstock bore. This design eliminates tilting torque and reduces mechanical stress on both the post and the rear mounting screws.
Permanently lubricated with Schaller special grease for maintenance-free reliability, the M6 Pin tuner features a 0.39 in center-to-center pin spacing and an 0.31 in post-to-pin distance. It comes complete with banjo bolts, stepped flanged collars, and mounting screws for complete installation.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| String Post Material | Brass |
| Button Bore Hole Diameter | 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Pin Spacing | 0.39 in (10 mm) center-to-center |
| Pin to Post Distance | 0.31 in (8 mm) |
| Weight per Unit (Metal Button) | 0.08 lb (36 g) / 0.08 lb (38 g) |
| Weight per Unit (Perloid/Ebony Button) | 0.07 lb (30 g) / 0.07 lb (31 g) |
| Product Weight | 0.79 lb |
| Lubrication | Sealed, Schaller Special Grease |
| Included Components | 6 Banjo Bolts, 6 Stepped Flanged Collars, 6 M2.2 x 9.5 Mounting Screws |


















