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Taps/ Dies

metaldad

metaldad

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im going to be placing an order at mcmaster carr soon.thinking about getting various taps/dies, for wheel studs/lug nuts. (as boy2 cross threaded one on the durango, which is 1/2x20)
anyone know thread size on wheel stud for a 68 b body? no left hand, but, wth, i just may 'need' it eventually. 2000 ram 1500? 2014 journey?
how about, any other 'interesting' size, that may get futzed up on a weekend repair, and unavailable till monday - due to auto parts houses not carrying taps/dies?
(like the 9/16 -12 for the ram's 02 sensor, that was another fun one)
thanks
 
You would be better off to use thread chasers not taps and dies. Once a thread is cut, it's cut and there really is no such thing as re-cutting. If the threads are slightly stretched or distorted you need only "chase" them, re-cutting removes even more of the thread.
 
https://www.smokstak.com/forum/showthread.php?t=39516

Read post #4.....

And depending how bad the boogered up threads are, you might can clean it up some with a three corner file or even a small half round (half flat? :D) file before trying to run a die nut over it. Make sure it's started on square too. I was the go to guy at work for messed up threads....damnit
 
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metaldad said:
thanks, cranky
m/c isnt descriptive enough, under the heading of 'thread repairing die'.
i would think these might be considered chasers
https://www.mcmaster.com/#standard-dies/=1a76nnf
Click to expand...
Never used a wrap around but always thought the single split die was so they could be adjusted for a different class of thread with the higher the class number, the tighter the clearance.
 
metaldad said:
thanks, cranky
m/c isnt descriptive enough, under the heading of 'thread repairing die'.
i would think these might be considered chasers
https://www.mcmaster.com/#standard-dies/=1a76nnf
Click to expand...


They call them thread repairing dies because that is what they are made to do. But if the end of the bolt or stud is a real mess getting them properly started is key. If they don't find the original thread path they will tend to make their own.
If an original thread has been "cross threaded" (especially with a heavy hand) it could be real tough getting a die back on the right track. And what is left is still a mess.
There is good value in the repairing dies for cleaning dirty and or rusty bolts. I use mine all the time for that. Not to mention--they can be used with a deep socket if space is an issue.
 
Last edited:
Cranky said:
Never used a wrap around but always thought the single split die was so they could be adjusted for a different class of thread with the higher the class number, the tighter the clearance.
Click to expand...
Single split dies have a set screw in them so you can set the percentage of thread cut to match the hole thread.When threading a hole, the drill by number gives you the percentage of thread that will be cut by the tap. 80, 90, 100% thread = loose, tighter, tightest with no clearance in the threads.
 
Thread files work well on studs and bolts
I have both std and metric and saved a few peoples ***
 
Yatzee said:
Single split dies have a set screw in them so you can set the percentage of thread cut to match the hole thread.When threading a hole, the drill by number gives you the percentage of thread that will be cut by the tap. 80, 90, 100% thread = loose, tighter, tightest with no clearance in the threads.
Click to expand...
learned something new. thanks.
 
and............. back to the question, stud sizes?
 
I have these that would serve you well.

  • 71mS3NE3WiL._SX522_PIbundle-3,TopRight,0,0_SX522SY281SH20_.jpg
Click to open expanded view

Lang Tools
Lang Tools 2573 3-Piece Thread Restorer File Set
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  • Pitches include: SAE rethread files: 9,10,11,12,13,14,16,18,20,24,27,28 and 30; Metric Rethread file (Millimeters per thread): 0.75, 1.00, 1.25, 1.50, 1.75, 2.00, 2.50, and 3.00
  • Metric rethread file in mm: 0.75, 1.00, 1.25, 1.50, 1.75, 2.00, 2.50, 3.00
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khryslerkid said:
The thread size should be 1/2 x 20

Take a nut off the Durango, should be the same.
Click to expand...
too cold outside. and dark.
anyways, bought 1/2 20 and 5/8 18, 3 pc tap set, and, repair dies
from mcmaster, all made in USA
 
You do not have to go expensive to clean threads. Buy the best you can afford. If you plan on putting on new threads spend some money and get good ones.
 
mopar 3 B said:
You do not have to go expensive to clean threads. Buy the best you can afford. If you plan on putting on new threads spend some money and get good ones.
Click to expand...
i buy what mcmaster carr has.
 
I'll 3rd the thread files. They have saved my *** on more than one occasion.
 
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