your best bet is just to try to screw it on, I remember mine would screw directly on a 1/4" NPT connector, you can bring the hose to the hardware store if your compressor does not have a connector at the end and ask the person there for a 1/4" male to male adapter for an aircompressor to try it out..
if not look on testors.com and click on the Aztek logo... they will have it there..