National Gas Outlet Tap?!

O

ohspyro89

Cast Iron

Joined

Apr 19, 2006

Location

44667 Ohio

• Jul 22, 2006

• #1

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?

 

Grits

Stainless

Joined

Dec 14, 2004

Location

Little Rock, Arkansaw

• Jul 22, 2006

• #2

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

Grits

 

O

ohspyro89

Cast Iron

Joined

Apr 19, 2006

Location

44667 Ohio

• Jul 22, 2006

• #3

Neither carry NGO standard taps...sadly.

 

Forrest Addy

Diamond

Joined

Dec 20, 2000

Location

Bremerton WA USA

• Jul 22, 2006

• #4

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.

 

A

angel4life1

Plastic

Joined

Aug 3, 2006

Location

Sonoma County

• Aug 4, 2006

• #5

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.

 

K

Kallam

Cast Iron

Joined

Feb 11, 2006

Location

South Carolina

• Aug 4, 2006

• #6

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.

 

M

MisterFizz

Plastic

Joined

Jun 8, 2017

• Jul 22, 2019

• #7

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.

 

M

moonlight machine

Diamond

Joined

Nov 19, 2007

Location

marysville ohio

• Jul 22, 2019

• #8

MisterFizz said:

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.

Click to expand...

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

 

A

awander

Stainless

Joined

Jun 11, 2012

Location

Eastern PA

• Jul 22, 2019

• #9

Better late than never...

 

N

Norrissheldon

Plastic

Joined

Nov 14, 2019

• Nov 15, 2019

• #10

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

 

R

Reidy

Plastic

Joined

Jun 21, 2022

• Jun 21, 2022

• #11

I know this is an old subject but I wanted to come here to let others know that 1/2-14 NPST female threads are not compatible with .830-14 NGO Male threads. The male NGO thread is just a few thousands bigger and will not thread up unless you take a 1/2-14 die to the thread to reduce it.

I bought a 1/2-14 tap to make some paintball regulator adapters and the regulators I purchased will not thread in. The 1/2-14 tap major diameter measures .824" where as the CAD file for the. 830" NGO tap on McMaster shows it to measure .830". Looks like I get to buy a very expensive tap from McMaster!