Schaller M6 Pin Guitar Tuning Machine

The Schaller M6 Pin guitar tuning machine delivers outstanding precision and tuning comfort with an upgraded 1:18 gear ratio. CNC-machined brass string posts and high-grade internal components provide smooth, consistent operation and long-lasting stability.
Featuring the innovative stepped M6 flanged washer, this tuning machine reliably centers the string post through the threaded bushing without requiring a stepped headstock bore. This specialized design eliminates tilting torque and significantly reduces physical stress on both the post and rear mounting screws.
Permanently lubricated with Schaller special grease, the enclosed housing ensures maintenance-free performance. Designed with twin alignment pins at a 0.39 in center-to-center spacing, it offers seamless replacement for legacy single-pin configurations.
Gear Ratio
1:18
Product Weight
0.79 lb
Weight per Single Tuner with Button (Small/Large)
Metal (0.08 lb / 0.08 lb), Pearloid (0.07 lb / 0.07 lb), Ebony (0.07 lb / 0.07 lb) including threaded bushing
Button Bore Hole
Diameter 0.17 in with 0.14 in drive flat
Pin Spacing
0.39 in center-to-center
Pin-to-Post Distance
0.31 in
Flanged Washer Diameter
0.39 in
String Post Material
Brass
Lubrication
Schaller Special Grease (Permanent)