Gauged Nut Slotting Files
When it comes to clean setups and perfect playability, few tools are more critical than your guitar nut files. Our precision-ground nut slotting files are trusted by pros around the world for one simple reason: they get the job done right, every time.
These chrome-alloy steel nut files are engineered to cut fast, smooth, round-bottomed slots for nuts and saddles. With twin 4" cutting edges and a tempered edge-cut design, you get total control without chatter, slop, or string buzz.
File with confidence and accuracy
Every guitar nut file is gauged for a specific string size, so you can cut each slot to spec—tight enough for tuning stability, wide enough for clear vibration. Need something custom? Rock the file side-to-side to finesse a wider slot without losing precision.
What files do I need?
Choose nut slotting files that are the same size or no more than a few thousandths larger than your individual string gauges. A smaller file can also be rocked side-to-side to widen a slot to the desired size. For example, you can cut a .043" slot with a .042" file by moving it around a bit.
Looking for a one-stop solution?
Our complete set of 19 guitar nut slotting files gives you every gauge we offer—perfect for busy shops or multi-instrument builds.
Tip: Slotting Tune-o-matic style saddles
Nut slotting files work great for metal saddles. Choose your file size as you would when slotting a nut: use the same gauge as the string, or a few thousandths larger. After filing to the desired depth, we suggest polishing the slot with Mitchell's Abrasive Cord to remove file marks and burrs.
Get a better grip on your files!
Our new Nut File Backer makes these files even easier to use. It acts like a spine, stiffening the file for a straighter, more accurate cut—no more slipping and sliding on a slick nut or saddle. We have models for narrow and wide files, giving you complete control.
From first fret to final polish, precision starts here—with StewMac guitar nut files built to last a lifetime.
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