On Sun, 29 Jul 2012 05:00:32 -0700 (PDT), phaedrus
wrote:

Hi guys,

I've seen pictures of threaded tapers being machined on lathes and was
wondering what the hell use they are? I mean, since the diameter of
the threaded section is constantly varying, what can it possibly be
screwed into? I cannot imagine any nut or internal thread that would
accommodate such a piece of work.

Kindly disabuse me of my ignorance if you can, thanks.

P.

Pipe perhaps.

Oil drilling pipe tool joints are also taper threaded.
Cheers,
John B.