Schaller M6 Pin Guitar Tuning Machine
The Schaller M6 Pin guitar tuning machine sets an industry standard for closed machine heads, offering an upgraded 1:18 gear ratio for fine and smooth tuning precision. Every part is precision CNC-machined and surface-finished, featuring a self-locking drive that provides consistent, highly sensitive, and stable operation.
Crafted from premium brass, all string posts are precisely fitted into the housing to guarantee maximum tuning stability and wear-free performance. The specialized stepped M6 flanged washer centers the string post reliably without requiring a stepped headstock hole, eliminating tilting torque and taking mechanical pressure off both the post and rear mounting screws.
These closed tuning machines come permanently lubricated with Schaller special grease for maintenance-free use over their entire lifespan. Engineered with a dual-pin layout spaced 0.39 in (10 mm) center-to-center, they ensure effortless mounting and rock-solid shaft alignment.
| Brand | Schaller |
| Model | M6 Pin |
| Gear Ratio | 1:18 |
| String Post Material | Brass |
| Button Bore Hole | 0.17 in (4.2 mm) diameter with 0.14 in (3.6 mm) driving flat |
| Weight per Unit (Small / Large Button) | Metal: 1.27 oz / 1.34 oz (36 g / 38 g); Perloid: 1.06 oz / 1.09 oz (30 g / 31 g); Ebony: 1.06 oz / 1.09 oz (30 g / 31 g) |
| Total Weight | 0.79 lb |
| Pin Spacing | 0.39 in (10 mm) center-to-center |
| Pin-to-Post Spacing | 0.31 in (8 mm) |
