brahm

I know this is a kinda silly question, but I've been looking high and low for the thread type, pitch ect for the bottom on the NOS nitrous, and fuel Cheater solenoids. For some reason I can't find it online anywhere. If anybody knows off hand I'd be grateful I know it's a fine pitch, and I thought it was m5 .80, but they don't seem to fit "quite" right. I'm guessing it's a very close standard value.