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A small, unassuming piece of material sitting at the base of a guitar or bass’ headstock and the top of the fretboard, the nut is critical to getting the best performance out of your instrument.

With grooves that guide the strings from the tuning keys down the neck, the nut forms one of two anchor points making up the length of string that vibrates and creates sound. (The second anchor point being the bridge saddles.)

Not only are the grooves important, the nut’s material can also affect your tone.

So let’s dive in to the things you need to know about this unsung hero.

If the nut is not cut and fitted well, the strings won’t break across its front edge perfectly, causing endless tuning and intonation headaches, possibly even when your chromatic tuner says otherwise.

Nuts that have slots worn too wide or deep will further frustrate as the strings could slip out of the grooves or cause buzz, but if the grooves are too tight they can pinch the strings when you bend notes and prevent them from going back into tune.

Nuts are typically made out of bone, plastic, brass or graphite. Since the nut is one of the two points that transfers the vibrations of the string to the wood its density greatly contributes to tone. Although the best type of material is a matter of personal preference in most cases, each has their own benefits regarding price, durability, aesthetics and friction.

Luckily, nuts can be serviced or replaced, even if it is a job recommended for an experienced guitar technician requiring specialized tools and precision skills to do it correctly.

Just make sure you don’t overlook this humble, but important component, because keeping it in check could help keep your instrument’s tone and playability up to snuff.

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