90% of fogger nozzles are 1/16 NPT and it is nothing special..........just a common pipe thread.

3/16 is the common hardline size, but depending on application, I have also used 1/8 hardline as well as 1/8 "softlines" which is basically high pressure nylon tubing. We source out some special "pushloc" fittings to use the softlines. Usually a quick and easy way to add a second, third or fourth kit to a tight manifold.

EFI and DRY nitrous makes things easy. With the right nozzle, or a properly modified nozzle, in a DRY application you also put nitrous through the fuel side of a nozzle. Essentially making a regular fogger a two stage dry kit. I and others, also now make a 3 stage dry nozzle. I put this nozzle on both the inside and outside of our manifold for new engine. So we now have a 6 stage dry kit manifold. Six stages is NOT about MORE nitrous, because I can put all the motor can stand through two. It's about power management with 6 small kits, versus fewer BIG kits