Quote Originally Posted by bambuko View Post
correction
these threads are actually 1/4"-32 tpi (UNF)
Apologies for causing confusion.
Did you receive those specs directly from The Welders Warehouse?

I ask because recently I communicated with Graham Rhoades (Founding Partner / Technical Advisor) of The Welders Warehouse, and he was kind enough to relay the following specs("full data from the factory") ;

'The Welders Warehouse Multi-Jet Oxygen + Propane Nozzles'

"Nozzle Thread is ¼” x 36TPI UNF

Diameter of centre Flame Jet Holes are:

No1 = 0.7mm
No3 = 0.9mm
No5 = 1.1mm
No7 = 1.4mm"
...
"They’re made in Taiwan"

'Just hoping to prevent anyone(including myself) potentially damaging their (Smith AT61 ¼” x 32TPI) elbows and tips.

Also, what do you think of the tips currently (pros & cons etc.)?

Thanks in advance,
Jihoon