Thanks Gadge,
That should get all of us on the same page when it comes to the basic threading taps. Now the UK/OZ terminology makes a little more sense. I think it would make more sense to be Starting, Intermediate, and Finishing but that's probably just me.
The terminology between countries does make it more difficult to be same page when it comes to repairs or anything at times. This is why I posted what I understood were the three basic threading taps. Of course there are numerous other specialised versions of taps.
Eventhough there are different types of threads, here I mainly deal with SAE and Metric but have come across an engine with British threading.
What a pain to get taps and dies for an one time project. Even with both SAE and Metric die and tap sets I finding the need to buy even more of the more non common sizes as manufactures try to propriety some of the screws and threads that are more common to their part of the world.
Here when I was in school in the 1970's the teachers were making out that the world was switching to metric. Boy were they wrong. LOL !
