Schaller M6 Pin Guitar Tuning Machine
The Schaller M6 Pin guitar tuning machine combines legendary design with contemporary engineering, featuring an advanced 1:18 gear ratio for exceptionally precise and smooth tuning. Every component is CNC-machined and surface-finished to deliver uniform, sensitive response while the self-locking drive ensures unwavering tuning stability.
Crafted with premium brass string posts precision-fitted into the housing, these tuners offer zero-wear performance and long-lasting durability. The innovative stepped M6 flanged washer reliably centers the string post via the banjo bolt, eliminating tilt torque and the need for a stepped headstock bore while protecting the wood and mounting components.
Permanently lubricated with specialized Schaller grease, these closed tuning machines are entirely maintenance-free. Designed with dual rear indexing pins spaced at 0.39 in (10 mm) center-to-center and an 0.31 in (8 mm) pin-to-post offset, they provide secure mounting and direct drop-in functionality for compatible headstocks.
| Gear Ratio | 1:18 |
| Weight per Single Tuner (Small/Large Button) | Metal (1.27 oz / 1.34 oz), Perloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) |
| Button Bore Hole | Diameter 0.17 in with 0.14 in driving surface |
| Pin Spacing (Center to Center) | 0.39 in |
| Pin to Post Center Distance | 0.31 in |
| String Post Material | Brass |
| Lubrication | Schaller Special Grease (Maintenance-Free) |
| Included Items | 6 Banjo Bolts, 6 Flanged Washers, 6 Mounting Screws (M2.2 x 9.5 mm) |
| Brand | Schaller |
| Series | M6 Series |


















