I took the fill whip off that threaded into my Omega compressor, because I incorporated a new air filter into my setup. I still want to use the whip for an extension coming out of the air filter. The problem is I took one of my 1/8 bspp quick disconnects off one of my fill probes, and it won’t screw on to the whip. I miced the threads which are.387 OD, and wonder if this is metric? I would like to get a male quick disconnect on this instead of buying an extension. Any ideas or direction would be grateful. Thanks Rick