This may seem simple, but no one has ever explained it to me. What are AN fittings? I see them in all my catalogs and they look good. Are they like the double flare fittings I make for my brake lines? Are there special tools needed to use them? Do the sizes match up to 3/8 th, 5/8 th tubing? And what does AN stand for? Are they primarily used for fuel?
Tony in Austin