It may be the same thread, but the flare looks different to me.. I have been selling AN fittings for a couple years now and I kind of developed an eye for them... it's an 8º difference between the two, and the "hypotenuse" of the flare is about 1/8".. It may be AN but I'm going with my gut on this one, it looks different than what I am used to seeing. Fire at 60 psi is pretty scary to me and I'd rather not do something I feel isn't right, even if it is.