Schaller M6 90 Guitar Tuning Machine

The Schaller M6 90 guitar tuning machine delivers refined performance and tuning comfort, utilizing a precise 1:18 gear ratio for smooth and stable adjustments. Built with CNC-machined components and premium brass string posts, it ensures long-term wear resistance and reliable tuning stability.
Equipped with an innovative stepped flanged washer, the unit centers the string post securely through the threaded bushing without requiring stepped headstock boreholes. This design eliminates tilting torque and reduces mechanical stress on both the post and rear mounting screw.
With permanent Schaller special grease lubrication, the enclosed housing remains entirely maintenance-free over its operating life. Sharing identical installation dimensions with its predecessor, it offers a seamless retrofit for electric and acoustic guitar headstocks.
Brand
Schaller
Model Number
1005
Series
M6 Series
Product Type
Guitar Tuning Machine
Gear Ratio
1:18
String Post Material
Brass
Lubrication
Permanently lubricated with Schaller special grease
Button Borehole
Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat
Mounting Screw Size
M2.2 x 9.5 mm
Single Tuner Weight with Button (Small / Large)
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)
Item Weight
0.79 lb