THREAD NAMING CONVENTIONS - NEED A GAUGE BUT DON'T KNOW HOW TO ASK FOR IT!

[eg0u4106]

Hi,
I need a go/no-go gauge for the below (1/2"), but really don't know how to ask for it...could somebody help, please?
A stockist/manufacturer, UK or worldwide, would also be helpful.

http://files.engineering.com/getfil...61-416d-b5af-e671575cc4ef&file=thread_pic.jpg

http://files.engineering.com/getfil...-4ffc-b6e5-69bf78480881&file=thread_table.jpg

Many thanks in advance.

 

[hydtools]

1/2" NPT go/no-go plug gauge

Ted

 

[hydtools]

See also:

http://www.hemcogages.com/pipethreadgages.htm

Ted

 

[eg0u4106]

Hi Ted,
Thanks for that...I assume any 1/2" will have a TPI of 14 then? Or do I need to mention this, too?
Cheers.

 

[Cockroach]

No need to mention. NPT are listed in the Machinist Handbook. This can be a valuable reference.

Regards,
Cockroach

 

[hydtools]

No need to state 14TPI if threads are to ANSI/ASME tapered pipe thread standard.

Ted

 

[1gibson]

http://www.mcmaster.com/#thread-plug-gauges/=kvmo2d

 

[racookpe1978]

But you MUST state that you are quoting 1/2 NPT (pipe threads) in your request ..

Straight (mechanical) 1/2 threads are defined at 13 TPI.

 

[eg0u4106]

Cheers all.