Nut Seating Files

  • 31 Reviews
  • Write a review

Sturdy files for cleaning and squaring nut mounting surfaces. They file only the bottom of the slot, leaving the side walls unscarred.

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For 1/8" wide nut

Item # 5055
In stock, ready to ship!



For 3/16" wide nut

Item # 5056
In stock, ready to ship!



For 1/4" wide nut

Item # 5057
In stock, ready to ship!


Total: $0.00
Quantity: 20


Sturdy files for cleaning and squaring nut mounting surfaces. They file only the bottom of the slot, leaving the side walls unscarred.

These files have fine and medium cutting surfaces.

Each file is 7-3/8" (187.33mm) long, with 4" (101.60mm) cutting surfaces and a rubber-coated handle. To keep the file from binding in the slot, we have designed these files to be slightly narrower than the nut size specified. An undersized file also helps to prevent widening the slot width—ensuring a snug fit for your nut.

5055 For 1/8" (3.18mm) wide nut Works for Fender® guitars and basses
5056 For 3/16" (4.76mm) wide nut Works for Gibson® guitars, basses, banjos, and mandolins
5057 For 1/4" (6.35mm) wide nut Works for classical and Dobro® guitars

Product Instructions

Making a Nut, Step-by-Step

Dan Erlewine, of Stewart-MacDonald's R&D Team, walks you through making and installing a new nut.

Ratings & Reviews

Nut Seating Files

  • Based on 31 Reviews
Displaying 1 of 4 1 2 3 4
Write a review

Great Tool

By rockinross from Tipton,California
(Customer's Reviews) Friday, July 11, 2014

I used the 1/8" to seat a roller nut, very easy to use coarse on one edge and fine on the other so I have a nice smooth surface for the nut

Great File!

By Pettymusic from Florida
(Customer's Reviews) Saturday, January 25, 2014

Once again, Stewmac has provided the perfect tool to do a perfect job. Very happy with this file. Thank you!

Nut Seating Files

By Martin from Rosario, Santa Fe, Argentina
(Customer's Reviews) Tuesday, September 10, 2013

A must have tool!


By Andrew H. from South Carolina, USA
(Customer's Reviews) Thursday, September 05, 2013

Just was one of those tools I needed and didn't know where else to get it. Worked great for me.

Pretty good file..

By T Jones from Chester, MT
(Customer's Reviews) Thursday, June 27, 2013

Great for cleaning glue, old or new lacquer out of the nut slot...

Worth the Price

By DBMiller from Louisiana, USA
(Customer's Reviews) Sunday, December 30, 2012

Sharp. Easy to use. Does exactly what it's suppose to do.

1/8" file is not 1/8"

By Tiunov (22) from Moscow, Russia
(Customer's Reviews) Thursday, November 08, 2012

This is excellent tool, file is very sharp.

Strange thing here is the thickness of file, that's not equal to 1/8 of an inch (something like 2,7 mm instead of it). It's still possible to clean nut slot, but i need to move file from side to side while cleaning. There is almost no negative effect from this size shrinkage - it's mostly just strange...

Tried to go without

By Gregg from MN
(Customer's Reviews) Friday, October 05, 2012

These are much easier to use and more effective than sand paper on a stick.

Good quality

By Moriarty Guitars from Dublin Ireland
(Customer's Reviews) Saturday, September 08, 2012

Good quality file - gets into the corners. It is a little too undersized for my taste.


By JAL from Lomita, Ca
(Customer's Reviews) Thursday, July 26, 2012

Another high quality specialized tool from STEWMAC, that makes the specialized art of Luthiery, and string nut installation, all the more easier. Another specialized tool very hard to do without...

Displaying 1 of 4
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