Graph Tech Guitar Labs proudly announces the release of the UN-LOCK Nut for 7-string guitars, expanding the groundbreaking UN-LOCK platform that has transformed tuning stability for modern players. After the huge success of the 6-string UN-LOCK Nut lineup, and overwhelming demand from artists, builders, and extended-range players, the family is growing again.
The new 7-string UN-LOCK Nut joins the four existing UN-LOCK Nut models for 6-string guitars, completing a full upgrade system for today’s tremolo-equipped and high-performance instruments.
Traditional locking nuts changed guitar history but also introduced familiar frustrations: restricted tuning at the machine heads, slow string changes, mismatched radii, added weight, and reliance on fine tuners and Allen keys. With locking tuners now standard on many performance guitars, players have asked: Why are we still locking at the nut like it’s 1979?
The 7-string UN-LOCK Nut is Graph Tech’s answer, a modern, player-centric upgrade designed for extended-range performance.
Modern Engineering for Modern 7-String Players
The new UN-LOCK Nut features:
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Precision-engineered string ramps for smooth return-to-pitch and perfectly matched 10″, 12″, and 16″ neck radii.
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300% more internal lubrication, allowing tremolo players to return to pitch with unmatched consistency.
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Over 80% less weight than a traditional locking nut for improved resonance and reduced headstock mass.
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Full tuning freedom at the machine heads, no clamps, no Allen keys, no fine tuners required.
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Floyd-ready compatibility, unlocking the full potential of double-locking bridges.
Crafted from Black TUSQ XL, the UN-LOCK Nut delivers Graph Tech’s signature clarity, ultra-low friction, and modern tuning stability—built for aggressive tremolo use and expressive 7-string playing.
Pairing it with Ratio® Locking Machine Heads creates the fastest, most intuitive tuning system available.
New 7-String UN-LOCK Nut Models and Specifications
Graph Tech introduces two 7-string models to match the most common locking-nut footprints:
Model #6521 — 7-String UN-LOCK Nut
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Length: 48.01 mm (1.890”)
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Width: 15.50 mm (.610”)
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Height: 8.55 mm (.337”)
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String Spacing: 41.50 mm (1.634”)
Model #6522 — 7-String UN-LOCK Nut
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Length: 48.00 mm (1.890”)
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Width: 15.50 mm (.610”)
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Height: 8.55 mm (.337”)
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String Spacing: 41.50 mm (1.634”)
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Both models are drop-in replacements for many popular 7-string locking-nut footprints.
Built for the Brands Players Love
Designed for compatibility with leading 7-string platforms from Ibanez, Schecter, ESP/LTD, Jackson, Dean, Music Man, and more.
Experience It at NAMM 2026
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