Schaller M6 Pin Guitar Tuning Machine
The Schaller M6 Pin Guitar Tuning Machine delivers industry-standard precision and dependable tuning stability for contemporary instruments. Engineered with an optimized 1:18 gear ratio, this closed-gear design guarantees a smooth, ultra-sensitive response during fine-tuning. Every component is CNC-machined to exacting tolerances and permanently lubricated with Schaller proprietary grease for maintenance-free operation.
Featuring high-grade brass string posts precisely seated within the housing, the M6 Pin ensures zero-wear performance and maximum mechanical alignment. The innovative stepped M6 flanged washer reliably centers the post without requiring stepped headstock boreholes, eliminating tilting moments and relieving stress from both the post and fixing points.
Equipped with dual mounting pins spaced at 0.39 in (10 mm) center-to-center and an 0.31 in (8 mm) spacing from the pin line to the post center, this machine provides rigid, twist-free headstock anchoring. Premium finishes and precision-crafted button selections offer refined aesthetics and consistent performance across diverse playing demands.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| String Post Material | Brass |
| Lubrication | Schaller special grease (permanently lubricated, maintenance-free) |
| Weight per Single Tuner with Button (Small/Large) | Metal (1.3 oz / 1.3 oz), Perloid (1.1 oz / 1.1 oz), Ebony (1.1 oz / 1.1 oz) including hollow screw |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Pin Spacing (Center-to-Center) | 0.39 in (10 mm) |
| Pin to Post Center Distance | 0.31 in (8 mm) |
| Flanged Washer Diameter | 0.39 in (10 mm) |
| Product Weight | 0.13 lb |




















