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Thread Checker

Nut and Bolt Thread Checker (Complete SAE/Inch and Metric Set) (Packs)

    • Based on 1,282 reviews
Condition: New
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$60.65 Why this price?
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Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, May 11
Order within 15 hours and 1 minute
Available payment plans shown during checkout

Color: Original version


Features

  • 23 of the most common SAE and 21 of the most common metric sizes, see description
  • Each included size has a nut and bolt checker on the same gauge.
  • Thread sizes are permanently stamped on each gauge.

Description

Nut and Bolt Thread Checker (Complete SAE/Inch and Metric Set) (Packs)


Size: One Size


Color: Original version


Brand: Thread Checker


Fastener Type: Bolt


Number of Pieces: 2


Manufacturer: ‎Thread Checker


Part Number: ‎SWTC-M21


Item Weight: ‎2.33 pounds


Package Dimensions: ‎6.06 x 5.31 x 1.81 inches


Item model number: ‎SWTC-M21


Is Discontinued By Manufacturer: ‎No


Size: ‎One Size


Color: ‎Original version


Item Package Quantity: ‎1


Number Of Pieces: ‎2


Included Components: ‎Two sets of thread checkers


Batteries Included?: ‎No


Batteries Required?: ‎No


Date First Available: April 14, 2017


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, May 11

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews

    • Good quality
Color: Original version
Almost bought a cheap Chinese set but saw reviews that they were a softer metal. All it takes is the wrong person trying to prove the wrong thread size to ruin those. Paid a few extra bucks for this, but well worth it
Reviewed in the United States on June 3, 2023 by Dj Bilodeau
    • SAE and Metric gauges.
Color: Original version
A must for everyone’s tool kit.
Reviewed in the United States on April 20, 2023 by Jrohmer
    • Missing sizes
Color: Original version
I don’t know if there’s in between sizes or what but could find the right size for a hand full of bolts and nuts
Reviewed in the United States on May 18, 2023 by jorge
    • Worth the price.
Color: Original version
These are not cheap, but you definitely get what you pay for. These are high quality and exceptionally well made.
Reviewed in the United States on March 10, 2023 by Laird
    • Convenient Item
Color: Original version
I have a kit with tagged bolts and nut. This is just something you can hang on a nail not taking up space and keeps in order. I’m happy with this.
Reviewed in the United States on February 18, 2023 by Jason J
    • Excellent set, but with one major flaw.
Color: Original version
Review Image by Pyles The Beaver Pyles The Beaver
Review Image by Pyles The Beaver Pyles The Beaver
Review Image by Pyles The Beaver Pyles The Beaver
This is an excellent set with all the most common thread sizes. However, it does have one major flaw. Since all the pieces are strung together on a cable to prevent losing them it makes using them very awkward as you have to spin the entire cable, and all the other pieces, around to thread them in. So I cut the cable and made a holder out of wood for them. This does make them more easy to lose but I have never lost a tool and take good care of them. This would be a 5 star item if they made a plastic box to keep them in and organized. Update: I finally designed a box and had it 3D printed. See last photo. ... show more
Reviewed in the United States on June 24, 2022 by Pyles The Beaver Pyles The Beaver
    • Fantastic
Color: Original version
Perfect
Reviewed in the United States on March 21, 2023 by Cowboythebouncer
    • Fantastic invention with almost all of the common sizes.
Color: Original version
Found this after thinking "Oh, I wonder if anyone has done this before." And Lo! Product works very well. In particular, the "internal thread" section (for checking screws/bolts) is deep enough to catch the difference between a 1mm pitch, and a 24 TPI pitch. Which leads me to my only significant complaint: #12-24 is missing! I've been told it's "not as common" anymore, which may well be true, but my 500x box of #12-24s I have from my 19" rack mounting days disagrees. There's actually a significant size gap between #10 and 1/4 inch. Importantly, a #12-24 can be easily mistaken for a M6. A #12-24 will fit rather loosely into a M6 nut, and the thread pitch is very close; a single nut's depth won't catch the discrepancy, which is why it's more important to have included #12-24 in the thread checker! Another brand of thread checker (from boltdepot) is also missing #12-24. It's a conspiracy, I tell you! :) In addition, some of the values printed can be a teensy bit hard to read, specifically where the paint application has been inconsistent. Since the stamping is very good, a bit of paint and a wipe with a solvent dampened rag addresses that perfectly. However, it isn't really needed... I'm just enthusiastic about good instruments. Nevertheless, I'm very happy with this. I can now OCD-like sort out my box of random screws with confidence (except for #12-24 :) ) ... show more
Reviewed in the United States on April 30, 2020 by Chris C.

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