Search  for anything...

TOMMARS 49-Piece Thread Chaser Set for UNC, UNF and Metric Threads

  • Based on 322 reviews
Condition: New
Checking for the best price...
$56.99 Why this price?
Save $12.99 was $69.98

Buy Now, Pay Later


As low as $9.50 / mo
  • – 6-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: Only 10 left in stock, order soon!
Fulfilled by Amazon

Arrives Wednesday, Oct 21
Order within 2 hours and 53 minutes
Available payment plans shown during checkout

Protection Plan Protect Your Purchase
Checking for protection plans...

Style: Thread Chaser&File


Size: Metric and SAE


Features

  • Thread chaser set includes: UNC(silver): 5/8-11, 9/16-12, 1/2-13, 7/16-14, 3/8-16, 5/16-18, 1/4-20; UNF(black): 5/8-18, 9/16-18, 1/2-20, 7/16-20, 3/8-24, 5/16-24, 1/4-28; Metric(gold): M14*1.5, M12*1.75, M12*1.5, M12*1.25, M11*1.5, M10*1.5, M10*1.25, M10*1.0, M8*1.25, M6*1.0
  • This thread repair kit is specially designed to chase worn and damaged threads and clean stubborn dirt and corrosion without shaving off metal.
  • This master thread chaser kit is a must-have for any auto mechanic to chase threads on rusty fasteners and bolt holes on cylinder heads, engine blocks, and other vehicle bodies.
  • The thread chaser set is made of high-quality carbon steel, providing strength and maximum durability. The dies and taps are hex-shaped, making them compatible with a wrench or socket.
  • This master thread chaser set comes with a storage case that keeps everything organized. The taps and dies are color-coded for easy identification, making it easy to differentiate between coarse, fine, metric, and SAE chasers and dies at a glance.

Description

Visit the Store Visit the Store Visit the Store Visit the Store Visit the Store

Manufacturer: ‎TOMMARS


Brand: ‎TOMMARS


Item Weight: ‎5.13 pounds


Package Dimensions: ‎13.15 x 9.84 x 2.6 inches


Item model number: ‎K1L92733


Manufacturer Part Number: ‎K1L92733


Date First Available: September 1, 2022


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Oct 21

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Greetings, fellow explorers, intrepid mechanics, and guardians of the forgotten!
Style: Thread Chaser&File Size: Metric and SAE
Captain Elara Vance here, broadcasting from the heart of the Whispering Nebula, and I've just had an encounter that demands immediate commendation for a piece of terrestrial engineering that saved our very expedition. We were deep into uncharted territory, attempting to reactivate the ancient power conduits of the long-lost Xylosian Star Forge. Our mission: to harness its legendary energy for the good of the galaxy. All was going well until a critical pressure valve, a relic of a bygone era, seized. Its threads, corroded by millennia of cosmic dust and temporal flux, were utterly stripped. The Forge's core began to destabilize, alarms blared, and the fate of our vessel, and indeed, the entire sector, hung by a thread – or rather, the lack thereof. Panic threatened to set in, but then, from the depths of our emergency repair locker, First Mate Jaxson produced it: the TOMMARS 49-Piece Thread Chaser Set Repair Kit. At first glance, it looked like a mere collection of metal, but as Jaxson laid out its contents, I knew we had found our salvation. "Captain," he declared, "this kit has everything! UNC, UNF, Metric – every thread standard known to sentient-kind! Taps for cutting new threads, dies for restoring external ones, and even thread files for those delicate, almost-lost cases!" With the precision of a seasoned surgeon, Jaxson selected a metric die from the gleaming array. The valve's housing was a strange alloy, but the TOMMARS die bit into it with surprising ease, recutting the damaged external threads with a satisfying, almost melodic, shink-shink-shink. Next, a tap from the set was employed to chase the internal threads of the mating component, clearing away the ancient debris and restoring them to pristine condition. The ergonomic handles felt solid, the cutting edges sharp and true, even against alien metals. Within minutes – minutes that felt like an eternity – the valve was rethreaded, reassembled, and sealed. The alarms silenced, the Forge stabilized, and a cheer erupted from the bridge crew. We had averted catastrophe, all thanks to this magnificent kit. This isn't just a tool; it's an artifact of salvation. For anyone venturing into the unknown, restoring ancient machinery, or simply maintaining their starship's vital systems, the TOMMARS 49-Piece Thread Chaser Set is not merely recommended; it is essential. It's a testament to meticulous craftsmanship and comprehensive design. Five stars, and a hearty recommendation from the crew of the Stardust Wanderer! May your threads always be true! ... show more
Reviewed in the United States on February 11, 2026 by STEVEN MAGALLANES

  • Recommended. Good value for price.
Style: Thread Chaser&File Size: Metric and SAE
I’ve used this less than five times already but it’s worked well for my needs. I had to chase the threads in the mountain holes for an electric motor on my snow plow. Did a fine job. Make sure the cutter is lubricated and go slowly – make a bit of a turn, back out, make a bit more of a turn, back out, repeat. ... show more
Reviewed in the United States on July 26, 2026 by Dennis

  • Most all sizes needed in this kit.
Style: Thread Chaser&File Size: Metric and SAE
Fast delivery and has the odd sizes others chaser sets do not.
Reviewed in the United States on June 30, 2026 by jdub

  • Just the kit I needed!!
Style: Thread Chaser&File Size: Metric and SAE
Haven’t been able to use this kit as yet, but soon. Four stars only because of that, but I’m sure it will go a five star. It’s a really nice kit, looking forward to using it and finish up my project. Looks plenty durable. Recommend.
Reviewed in the United States on April 3, 2026 by Ron B.

  • Worth the money
Style: Thread Chaser&File Size: Metric and SAE
Exactly as described
Reviewed in the United States on April 20, 2026 by Amazon Customer

  • Works as intended
Style: Thread Chaser&File Size: Metric and SAE
Have used it a few times now since purchasing. Made easy work cleaning out bolts holes.
Reviewed in the United States on May 23, 2026 by paul post

  • Okay
Style: Thread Chaser&File Size: Metric and SAE
This set of thread chasers is good for the DIY'er. Not absolutely the best but not bad.
Reviewed in the United States on February 3, 2025 by Carl Kraus

  • Same thing they sell on the tool trucks
Style: Thread Chaser&File Size: Metric and SAE
Save yourself a chunk of money and buy this kit. Its the same thing as what the tool trucks sell but without that fancy name.
Reviewed in the United States on January 3, 2026 by kris carroll

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...