Double-edge Nut Files

  • 69 Reviews
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The most durable and efficient nut-slotting files available. Specially designed for nut slotting, each file cuts two different width slots.

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Double-edge Nut Files 0.012" / 0.020"

0.012" / 0.020"

Item # 4541
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$27.34

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Double-edge Nut Files 0.026" / 0.032"

0.026" / 0.032"

Item # 4542
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$27.34

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Double-edge Nut Files 0.036" / 0.042"

0.036" / 0.042"

Item # 4543
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$27.34

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Double-edge Nut Files 0.050" / 0.060"

0.050" / 0.060"

Item # 4544
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$27.34

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Double-edge Nut Files 0.075" / 0.090"

0.075" / 0.090"

Item # 4545
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$27.34

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Double-edge Nut Files 0.105" / 0.120"

0.105" / 0.120"

Item # 4546
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$27.34

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Product Details

The most durable and efficient nut-slotting files available. Specially designed for nut slotting, each file cuts two different width slots.

Each 9/16" x 7-5/8" (14.29mm x 193.67mm) steel file cuts on the edges only, and tapers from the center to a different thickness on each cutting edge. The set of six files does the work of twelve!

Rubber-coated handles give firm, comfortable control for the job. The complete set includes edge widths for filing round-bottom nut slots on most stringed instruments, including basses. Each file's cutting edge is approximately 3-7/8" (98.43mm) long.

What files do I need?
Choose nut slotting files that are the same size or no more that a few thousands 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.

The most popular Double-edge Nut Files are included in the Essential Nut Making Tool Kit, which has all the basic tools you'll need for shaping, string-spacing, slotting and fitting string nuts like a pro.

Tip: Customize your files
We recommend that you mark on each side of your files so while working you can quickly tell the different gauge of cut.

Here's how: make a cut on a scrap piece of bone or wood with both sides of the nut file, then measure the width of each cut with feeler gauges to determine which side is which. Guitar strings of known gauges will also work as measuring tools in a pinch.

Once you have determined the proper edge, mark the file accordingly with a permanent marker.


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

Double-edge Nut Files

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  • GOOD PRODUCT
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  • Based on 69 Reviews
Displaying 3 of 7 1 2 3 4 5 6 7
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Decent Files

By J C S
(Customer's Reviews) Monday, October 15, 2012


These files are much easier to work with because they are so much stiffer then StewMacs "gauged nut slotting files". (which are like feeler gauges with a file edge). However I received one file that the teeth were not cut properly so that the edge was concave instead of being rounded. A few others were square instead of rounded. I have to clean up the slots with the flimsier files to ensure there is no hump on the bottom of the string slots.

All together now.

By Zeke Nattrass from Tennant Creek, NT
(Customer's Reviews) Thursday, October 04, 2012


Love'm and for a very good price when bought in the set. Stewmac are my gods.

Mediocre at best

By Luke MacNeil from Uxbridge, MA
(Customer's Reviews) Wednesday, September 26, 2012


First of all these aren't that sharp. It takes considerable effort with my set at least to notch bone.

The sizes marked on the handles wore off on my FIRST use. Fantastic. Each edge is not labeled.

I thought stewmac was supposed to be a bastion of quality. I'm not impressed.

Good starting kit.

By Greg Robinson - Guitar & Amplifier from Melbourne, Australia
(Customer's Reviews) Tuesday, September 18, 2012


Not my favourite for this job, but a close second! Don't drop them! (they chip easily) If you take care of them, they will serve you well for a long time.

Good file set but is missing one thing..

By Great product from Kihei, hawaii
(Customer's Reviews) Friday, September 14, 2012


This is a great file set. I use it for nuts, saddles and a few other random things. Only thing is it could really use a .010 and a high .04? Other than the .42....just a big jump to .050

Essential Items

By James Murphy from Plymouth England
(Customer's Reviews) Tuesday, August 07, 2012


I have not found any general tools which can be used to file nut slots accurately. I purchased 4 files to cover 12 gauge strings and classical strings and have used them on an OM and a classical guitar with good results. These tools provided the most cost effective option for me.

Gauged Nut Files

By Craig Wells from Stockton, CA
(Customer's Reviews) Wednesday, June 06, 2012


I own the entire set and really like them. The only thing I do not like is that they are not indicated as to which side of the file is which size. This needs to be etched on the file for quick reference.

Fine detail work made easy

By C. Dobson from Hastings, Ontario
(Customer's Reviews) Thursday, May 31, 2012


These are the finest files I have ever used. The burrs are extremely fine, accurately made, and very sharp.

Nice Files!

By SteveVan from West Vancouver
(Customer's Reviews) Wednesday, May 02, 2012


A nice addition to the toolbox, especially good for basses. Marked sizes would be nice, but two minutes with a Sharpie and its done.

nut files

By Steve Gomes from Santa Rosa, CA
(Customer's Reviews) Monday, April 02, 2012


good tools but I too would like to see them more clearly labeled, have more useful sheaths and include a .010 and .015 to use on mandolins.

Displaying 3 of 7
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