Why Your Shop Needs a Thread Chaser Kit

What is a thread chaser, and when should you be using one? If you have been using a tap and die to clean damaged threads, then you are doing it wrong. Here is the right way to do it.
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[@borysnijinski331]

Thread file is a great idea for large diameter threads like the threads on a trailer hitch ball.

[@PaulHenreid]

good technique and instructions - too bad thread chasers are not often in stock at local hardware or auto parts stores

[@mikegrizwold2522]

Great tip Tim! I have a similar kit and just used it to fix a brake caliper mounting bracket that was not machined to good in the bolt holes. Almost didn’t make the Monterey kickoff cruise in yesterday but my thread chaser saved the day. I was able to clean up the threads and bring my car to the show. Congratulations on a great event! This was the best one yet!

[@user-gc1zn5mn4p]

Tim, I never heard of a thread chaser so you educated me. Gut gemacht :)

[@alexpetersheldon]

Thanks for this. I needed to clean out the threads in a set of carbon bicycle forks that I had removed a stuck bolt from. Lots of swarf etc. In the hole. I was going to use a thread tap but I could feel very early on I was about to ruin the threads in the fork. So I got a spare bolt and ground out some grooves using my dremmel and made my own thread chaser. It worked perfectly! I just was very careful to only progress a couple of turns at a time, then back out and clean the tool and going a little further. I think the tap would have just cut away whatever was ahead of it and quite possibly would have been a mess where the next bolt to go in would have not gripped properly.

[@Ghostrider-71]

Great information and very informative. Thank you for posting.

[@ClassicMotorsports]

Glad it was helpful!

[@The333]

Really great video, thanks for sharing this information, very useful.

[@ClassicMotorsports]

Glad you enjoyed it!

[@NathanPhilps1]

Informative video. Thanks!

[@ClassicMotorsports]

You're welcome!

[@gregory3930]

Nice explanation

[@nigelkavanagh2048]

Hi Tim, do you know where I could pick a whitworth 1"dia 14tpi chaser please? Great vid sir. 👍

[@user-ux8cc2ew3l]

Thank you. I’m getting prepped to tap/chase some paint filled threads on my 55’ Chevy truck.

[@ClassicMotorsports]

Good luck!

[@whotookgetinthebag]

What a good video. Thankyou.

[@ClassicMotorsports]

Glad it was helpful!

[@deansarow6259]

Nice explanations of thread chasers,get yourself a sliding tee handle,much easier than reversing back and forth with ratchet.Trust me,it worls

[@tantrieu2809]

Hello Tim. Could you help me tell the difference of the three different colors of the threadchasers?! What purpose do they serve? Why differentiate them?. Thank you and Happy new year.

[@ClassicMotorsports]

In our particular kit, the standard thread tools are silver and the metric tools have a more gold zinc coating. But even within the individual tools there's some variation in the coloring, with some of the metric ones looking very much like the standard ones due to variations in the coating. But different brand kits may be configured differently. So always confirm the size via the stamping on each tool before you start your repair.

[@Chancho66]

I had a ground stud completely mangled @ the midway point where it would tighten up. ran a thread restorer down the stud and to my amazement was actually able to tighten the Holy Shizzit out of it!!! @that moment I was a Believer!!!

[@sarinsarin7898]

Thanks Tim, would I use a chaser on my sparkplug hole as it is cross theaded, I can insert a good plug only so far into it before it catches.

[@Chancho66]

apply grease to the rethreader to catch any debris. that should work.

[@chip9832]

💯

[@captainrandom6858]

👏

[@alkarim5890]

👍

[@KDawg09]

How well do thread chasers clean up threads with old, hard thread sealant?

[@Chancho66]

try chipping away the locktite. thread restorer will hang up on big patches. use a pick. or take old bolt and taper the tip and cut 3 slots similar to rethreader to break up. homemade rethreader at any length.

[@BillMonroe-vg8gn]

I used a tread file one time on a tractor axle , it slipped out my hand and of course it landed on concrete floor treads first , But the tread file cut them back straight enought to get the nut started. Saved a 75.00 axle / so not a bad idea to get a set of these stuff happens 😯

[@billyshelton78]

I can't seem to find a m14×1.50 for my oil pan.. when I do find the size it's a tap not a chaser

[@billyshelton78]

Should have went to the side that was messed up to really show how it works,most of the time you can't go through the clean backside

[@stevenjacobson8177]

Napa Carry’s a set.

[@timramich]

That tap and die set you showed is actually only useful for chasing threads. Try to use them to actually create new threads in a material harder than aluminum and you'll wind up snapping them.

[@averagearcher9523]

Don't take this personal but I see no reason to buy a whole extra set of tools when the original does the job just as good. Btw the tap you showed did not match the chaser. The tap was a pipe thread and your chaser was a straight thread.

[@BillMonroe-vg8gn]

As far as fixing the treads on a bolt , I would be more inclined to just spend a few dollars and buy a new bolt But axles , shafts, etc are costly

[@BillMonroe-vg8gn]

And luck has it when the treads are damaged it usually at the end we're they start not in the middle 😀

[@gregorydean2292]

You cheated going thru the back side