Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 tuning machine delivers exceptional tuning accuracy and smooth operation with its refined 1:18 gear ratio. All components are CNC-machined to exacting tolerances and surface-treated to ensure a self-locking drive with delicate, ultra-stable response.
Equipped with high-grade brass string posts engineered for wear resistance, each tuner incorporates the innovative stepped M6 flanged washer. This 0.39-inch diameter base centers the string post securely through the banjonut, eliminating tilting torque and removing the need for a stepped headstock hole.
Permanently lubricated with Schaller special grease for maintenance-free reliability, the M6 90 features identical mounting dimensions to legacy models for effortless, drop-in replacement across various guitar headstock configurations.
| Brand | Schaller |
| Series | M6 Series |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Weight | 0.13 lb |
| String Post Material | Brass |
| Lubrication | Permanently Lubricated |
| Button Hole Diameter | 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Stepped Washer Diameter | 0.39 in (10 mm) |
