Tap tails & thread sizes?

[nigelmercier]

I'm trying to get some new tap tails for a tap on my boat which has hot/cold inlets, and a mixed outlet.

The inlets have O-ring flexible fittings that measure 7.9mm OD, and seem to have a pitch of 1mm - so I'm guessing this is 8mm/1. Has anyone seen tails like this? Ideally I'd like the tails to have 1/2" BSP M the other end.

The outlet has the same thread on the tap body, but the other end (that fits to a shower hose) is very odd. Pitch is 1mm again, but the OD is 15mm. I can't use a standard shower hose as it has to pass through the tap body. Any thoughts?

Here's a photo, with a 10mm tail in the middle:

 

[savageseadog]

They are parallel threads which could be NPT or BSPP
Sorry can't help more than that.

 

[njamesphoto]

plumbcentre sell them there are two sizes and come with flex hose (30cm) with a compression 15mm fitting. used for monobloc taps £8 pair ish.

 

[2Tizwoz]

The adopted metricated standard for pipe threads is British Standard Pipe BSP. This is in fact an imperial standard based on the nominal bore, in inches and fractions of an inch, of the pipe.

This site has the thread dimensions