2.5" American NHT Thread

[Delgado]

Anyone have the tooling to cut or know where I can get some ally tube with a male 2.5" NHT thread?

What I'm planning to do is adapt some UK instantaneous male fire hose couplings to fit an american ground monitor. I've tried all my suppliers but they're messing me about a bit, to the point where I might just make my own.

They dont need to hold too much pressure, 10bar tops, so I would have thought that some 6 or maybe 8mm W/T ally tube would be fine.

Only need about 3 x 80mm lengths.

 

[cutandshut]

I use www.metals4u.co.uk for aluminium tube in small quantities..

Is it 2.5" O/D or nominal bore?

 

[madkayaker]

will have a look in the box of "special" threads at work.

 

[tigler]

Do you mean NPT thread ?

 

[Robotstar5]

Have you tried Angus, a friend of mine worked for them and had to source adapters to couple british hydrants etc to american fire equipment on a USAF base.

 

[Delgado]

I use www.metals4u.co.uk for aluminium tube in small quantities..

Is it 2.5" O/D or nominal bore?

Thanks, use them from time to time myself, but was more interested in the thread than the material

will have a look in the box of "special" threads at work.

If you could, that would be great!

Do you mean NPT thread ?

I'm pretty sure that it's NHT that I'm after, although I think that some call it NH (Internet seems to be full of conflicting info). This is what the manufactures PDF says... LINK

Have you tried Angus, a friend of mine worked for them and had to source adapters to couple british hydrants etc to american fire equipment on a USAF base.

Tried Angus, they put me onto another company (Walter Frank), but they need a 4 week lead time. Their prices were quite reasonable (about half what some other suppliers quoted), but idealy would like them quicker. If I have no joy, then I'll probably go with them.

Thanks everyone.

 

[hotrodder]

(Internet seems to be full of conflicting info)

What i found suggested that NH/NHT/NST is a standard that isn't standard

Not compatible with other systems. Thread pitch and diameters of fire threads may vary according to local and municipal regulations.

From here which has dimensions... http://www.onestopfire.com/threads.htm on the off chance it's one you haven't found

 

[tigler]

If any company can help you this lot can ,
http://dixoneurope.co.uk/pages/english/home.php

They are the UK division of an American company so should have knowledge of the thread and applications.

 

[madkayaker]

no luck in my box

 

[Delgado]

What i found suggested that NH/NHT/NST is a standard that isn't standard


From here which has dimensions... http://www.onestopfire.com/threads.htm on the off chance it's one you haven't found

Yes, not the easiest thing to get your head around, thanks for the link!

If any company can help you this lot can ,
http://dixoneurope.co.uk/pages/english/home.php

They are the UK division of an American company so should have knowledge of the thread and applications.

Cheers for that, I'll give them a try.

no luck in my box

No worries, thanks for looking!