Quote:
Originally Posted by fodenlads
7/8 14tpi tap required for for doing a fire box any one got one?
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I assume you want BSPT for a fusible plug?
There was a thread on here back in April. <
click here>
Whilst 7/8" doesn't seem to be a standard taper size, taps are sometimes available.
As the thread shows, some people have had success with
Tracy Tools. But when I was searching for one neither they nor anyone else seemed to stock them. In the end I made my own from carbon steel.
Good luck in your search.