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The Nicholson thread-restoring hand file is 8-3/8" long, has a square shape, and has thread teeth to restore damaged regular external threads on bolts. The file has teeth on both ends to fit the following thread sizes: 11, 12, 13, 14, 16, 18, 20, and 24 threads per inch (TPI). It has no teeth in the center to allow for grip.
Hand files are used to remove material and smooth and shape workpieces. They have forward-facing cutting teeth and cut when pushed over either a stationary or rotating workpiece. Single-cut teeth have single rows cut diagonally across the width of the file. Double-cut teeth have two sets of rows cut in opposite directions. American pattern files have three coarseness grades. Coarse, also known as bastard cut, is suitable for efficient, heavy material removal where finish is not a concern. Medium, also known as second cut, offers average material removal and finish quality. Fine, also known as smooth cut, provides the smoothest finish. Swiss pattern files have eight coarseness grades, from 00 (coarse), 0 (medium), and 1 to 6 (fine to finest), offering a smoother, more precise finish than equivalent American pattern files.
Nicholson manufactures hand tools and power tool accessories. The company is headquartered in Sparks, MD.
MARIUS
Reviewed in Canada on January 1, 2025
just right for refurbishing threads on antique car bolts
Happy
Reviewed in the United States on March 28, 2024
This has worked everytime I’ve needed it and has saved me a trip to the hardware store quite a few times.
Dale
Reviewed in the United States on August 7, 2020
-IF- You know how to use a thread file aka thread chaser properly Nicholson makes the best. They are sharp but not too sharp to cut rather than repair. Long lasting and fit very well in the hand.I have used these both at home and professionally. Great for use on awkward thread pitch/shank ratios. For instance the worm threads on a outboard engine for boats. The threads on the worm drive are very fine for the shaft size. A thread chaser is leaps and bounds cheaper than the exact sized die (which is not needed and also very hard to find.)
Mark
Reviewed in the United States on November 1, 2020
This file was exactly what I needed to help me fix a problem I had with my bicycle. It arrived quickly, was easy to use, and solidly constructed.
Conroy Dueck
Reviewed in Canada on October 27, 2020
Worked for what I needed it for.
P. Euans
Reviewed in the United States on January 16, 2020
This file does the job nicely! I needed a file to repair some 14 tpi pipe threads. I had made the mistake of trying to save some money by buying a set of Lang files, but the teeth on the 14 tpi file were so shallow they were useless. THIS file made by Nicholson is perfect! I've uploaded some photos so you can see the huge difference between the two brands. After using this file I was finally able to thread the pipe together! If I ever need to buy another one of these, I'm definitely sticking with this brand.
David E. Merewether
Reviewed in the United States on September 8, 2019
Would have liked it to be more aggressive.
Civilized Caveman
Reviewed in the United States on May 18, 2017
If you have bad threads, don't "chase them with a die or a tap; they are design to cut threads (ok, might help to clean the gunk off threads but you are still better off modifying a bolt or nut) not fix them. I had a pipe whose threads were crushed because it felt on its threads and could not replace it since the original European manufacturer did not have them nor did aftermarket (classic ,otorcycle and car owners know exactly what I am talking about). A bit of patience instead of caveman (hence my username) touch and it looked perfect... besides missing a bit of paint (who paints threads to begin with?).Since then I made sure to have both metric and SAE set. Better be prepared than sorry.
Public name required
Reviewed in the United States on August 20, 2016
Nice thread file .. Trusted name
AMZSQ
Reviewed in the United States on December 22, 2014
Worked awesome for repairing the threads on my power steering gearbox. I was able to use it even in the tight space on the truck without having disconnect the power steering lines. Some of the damage had been there for a while and some I added with a few gentle taps with a 10lb sledge after gentler methods failed to remove the pitman arm. A few minutes work with the file saved me from having to buy a new gearbox. I have other thread restorers and dies but for odd sizes its a lifesaver, sure I could have bought a 7/8-14 die but would I ever use it again? This was also cheaper. Since then I have used it to clean up after cutting bolts and threaded rod to length and it sure is a time saver.
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