NPT Internal Threads

[Mayhem]

I cannot thread a taper at present Steve, so I was simply describing how it do an internal thread. I don't think that Wongster can do it either unless his lathe is CNC (I think he has a CNC mill) or he has a taper attachment (I assume you can thread using a taper attachment).

I've screwed external NPT threads into female NPS threads that I've cut before. Some thread sealant and they hold OK. Of course, I'm not using them in high pressure applications just the oiler on my mill.