Thread: National Gas Outlet Tap?!

Well, its a common thread in the paintball industry, but I cannot find a Tap or die to save my life!

The threads are 0.825"-14 NGO (National Gas Outlet) right-hand male or female. I cant find either.

Id prefer a bottoming tap, the threads are about a half inch deep.

Does anybody know where to find one of these taps?


Also, how would one go about tapping such a hole? Would it need to be automated (cnc) or can it be done by hand?

Have you checked McMaster Carr, www.McMaster.com, or MSC, www.mscdirect.com, ?

Grits

Neither carry NGO standard taps...sadly.

All these standard but oddball gas valve threads are satisfied by taps carried in stock by major tap manufacturers.

You could bore the thread on a lathe in an hour.

I know this topic is a little old, but the right thread for an ASA is CGA 320. It will be hard to get a tap. A tap that will work for an ASA would be 1/2 nps. It is slightly off, but will work good, and is more common than CGA 320.

I make some parts for air guns we take a paintball co2 tank and make an adapter to fit on bb and pellet guns . The thread on the paintball tank is a 1/2 inch npts( national pipe tap straight)
.825 od and 14 threads per inch.
You can buy it from travlers ,msc mcmaster carr,
its a very common tap.

There's no such thing as an NGO tap because there's no such thing as an NGO.
NGO and National Gas Outlet is tossed around a lot and referenced as a spec
that is well maintained like the CGA. Fact is, like Santa, aliens, ghosts &
goblins - the NGO does not exist.

Originally Posted by MisterFizz

There's no such thing as an NGO tap because there's no such thing as an NGO.
NGO and National Gas Outlet is tossed around a lot and referenced as a spec
that is well maintained like the CGA. Fact is, like Santa, aliens, ghosts &
goblins - the NGO does not exist.

13 years late to the party you finally set us all straight......

Better late than never...

Dunno where Mister fizz gets his info from, but it is wrong. I have a. 830 X 14 NGO tap that I use for cutting the thread in drop blocks made to accept paintball bottles. The thread specification is detailed in an ASTM document designated F 1750 - 05 and titled Standard Specification for Paintball Marker Threaded-Propellant Source Interface.
Regards
Norris