The FR7NBP is Floyd Rose's Original series locking nut for 7-string guitars, finished in black hardened steel. It clamps all seven strings at the headstock end of the neck, taking string tension out of the equation at that anchor point so the tremolo can return to pitch. Without a functioning locking nut, fine tuners can only do so much — this is the part that makes the system work as a closed loop.

Fit is decided by two measurements, not by guitar model. The nut has to match your neck width at the nut slot, and it has to match your fretboard radius. Floyd Rose sizes its nuts by width codes — R2, R3, R4 and so on — and getting the wrong one means the outer strings either crowd the fretboard edge or sit proud of the radius and buzz no matter how you set it. Measure the width of your existing nut slot and check your fretboard radius before ordering. Do not guess from the model name alone.

The nut is hardened steel, which matters on a part that takes repeated clamping force from the locking screws every time you restring. Softer alloys can deform at the string slots over time, which introduces the same tuning drift the locking system is supposed to eliminate.

If you are not certain this is the right size for your neck, send us the make, model and year of your guitar and we will check it against what we know before you order.