Schaller M6 Pin Guitar Tuning Machine
The Schaller M6 Pin guitar tuning machine delivers outstanding precision and smooth tuning comfort with an upgraded 1:18 gear ratio. CNC-machined components and high-grade brass string posts provide exceptional durability, wear-free performance, and reliable tuning stability.
An innovative stepped M6 flanged washer ensures straightforward installation and lasting center alignment of the string post, eliminating tilt moment without requiring stepped headstock boreholes. Permanently lubricated with Schaller special grease, the sealed housing ensures completely maintenance-free operation.
Designed with two locating pins spaced 0.39 in (10 mm) center-to-center and an 0.31 in (8 mm) spacing from the pin to the center of the post, this tuning machine maintains standard housing dimensions for seamless upgrades and precision instrument setups.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Model | M6 Pin |
| Gear Ratio | 1:18 |
| Pin Spacing (Center-to-Center) | 0.39 in (10 mm) |
| Pin to String Post Spacing | 0.31 in (8 mm) |
| Button Borehole | 0.17 in (4.2 mm) diameter with 0.14 in (3.6 mm) driving surface |
| String Post Material | High-Grade Brass |
| Lubrication | Permanent Special Grease |
| Weight | 0.79 lb |




















