carguy300
Senior Member
Im assuming its to clean up bolt threads?, never seen these type before. Some chime in, enquiring minds.
Old stuff you still use.
- Thread starter Triple Pickle
- Start date
Vaanth
Member
The thread files come with various threads per inch (tpi). They are not for full re-threading as with a die, but for cleaning up damaged threads. My most common use case is when a thread, or a few, on the end of a bolt are damaged or folded over, but the remaining threads are okay. When that happens, a nut cannot get started on the threads, or even a die is hard to start.
To repair the threads, match the thread count of the bolt with the appropriate tpi face on the thread file, then following the existing threads on the bolt, use the file in a filing motion to re-shape the damaged thread(s).
Used like this. IMHO, a couple of these files and a set of rethreading taps and dies (not cutting types) is a must for anyone working on old cars.
Vaanth
Member
Howdy My new stereo is Yamaha m-70,c-70, t-80, and Cerwin Vega S-2 all from 1984 when I was stationed in England
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