Item #1599478 Model #PT-6518-00
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Graph Tech Black TUSQ XL Un-Lock Nut FR Original R3 and R4 Black


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Upgrade your Floyd Rose guitar with unparalleled tuning stability.

The Graph Tech Black TUSQ XL Un-Lock Nut FR Original R3 and R4 offers Floyd Rose guitarists a seamless and customizable nut upgrade. With the Un-Lock Nut, you can achieve unmatched tuning stability and precision on your Floyd Rose-equipped electric guitar.

Achieve Seamless Integration With Floyd Rose Bridges

The Un-Lock Nut is specifically designed for Floyd Rose-style bridges and locking nuts. It integrates seamlessly into your guitar, requiring no permanent modifications. The nut's extended string ramps distribute string tension evenly across the nut slots for smooth, stable tuning.

Customize String Action and Radius

With the Un-Lock Nut, you can customize each string's action height independently. The nut is crafted from durable Black TUSQ XL, allowing you to set the perfect action for your playing style. It is currently offered in 10" radius options to precisely match the fingerboard radius of your Floyd Rose guitar.

Experience Enhanced String Stability

The Un-Lock Nut's advanced slot design and precise radius matching gives your strings unparalleled stability and accuracy. The slots are optimized to work with the unique string behavior of Floyd Rose tremolos. Say goodbye to tuning issues and enjoy rock-solid stability.


  • Made from Graph Tech's Black TUSQ XL
  • Precision-machined nut slots for Floyd Rose bridges
  • Available in sizes to directly replace Floyd Rose Original R3 and R4 locking nuts
  • Customizable string height
  • No modifications required for installation on guitars with Floyd Rose bridges
  • Available in 10" radius