flexible tap tails thread pitches

Oct 07, 2005 3 Replies

I'm refitting a monblock tap which originally had rigid tails - no idea of make/model. I removed the rigid tails and found a 12mm thread on them so I bought 12mm tails from Screwfix. Thing is, the new tails seem to have a higher TPI on the threads and won't go in. I don't think I could even bodge it in satisactorily.



So, anyone got any ideas if there are just a few 'standards' for this sort of thing or am I better sticking with rigid tails or buying a new tap?



It's a very good fit on the 12mm outside diameter, but 12mm is almost exactly half inch so you could have something there. Anyone heard of half inch threaded monoblock tap fittings? Would the TPI be (generally) lower or higher on a metric threaded fitting?

I'd have thought the imperial would be something like 24tpi and the metric would be 1.5mm pitch, but I don't know much about plumbing.

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