Schaller M6 Pin Guitar Tuning Machine

The Schaller M6 Pin tuning machine sets a benchmark for closed guitar tuners, combining legendary craftsmanship with modern precision engineering. Built with an improved 1:18 gear ratio, it delivers ultra-smooth operation, fine adjustment sensitivity, and rock-solid tuning stability for electric and acoustic guitars.
Every component is CNC-machined to exacting tolerances and fully finished for long-lasting durability. The precision brass string posts are fitted snugly into the housing to eliminate wear and backlash, while the self-locking drive and lifetime Schaller special grease ensure maintenance-free, consistent performance.
Installation is straightforward and stable thanks to the innovative stepped M6 flanged washer, which centers the post via the threaded bushing without requiring step-drilled headstock holes. This configuration reduces tilting torque and relieves strain across the string post and rear mounting pins.
Brand
Schaller
Product Type
Guitar Tuning Machine
Series
M6 Series
Gear Ratio
1:18
Product Weight
0.13 lb
Pin Spacing (Center to Center)
0.39 in
Distance from Pins to Post Center
0.31 in
Button Bore Hole Diameter
0.17 in with 0.14 in drive flat
Stepped Flanged Washer Diameter
0.39 in
Weight per Single Unit (Metal Small/Large)
1.27 oz / 1.34 oz
Weight per Single Unit (Perloid Small/Large)
1.06 oz / 1.09 oz
Weight per Single Unit (Ebony Small/Large)
1.06 oz / 1.09 oz
Post Material
Brass
Mounting Type
2-Pin