
AN Fittings & Hose Sizes - Pegasus
May 19, 2020· ** Conventional rubber-lined stainless braided hose, except 3AN which is PTFE-lined. Tip: If you don''t have a proper measuring tool handy, open-end wrenches make great "go-no go" gauges in a pinch! If a 7/16" wrench slips over the threads but a 3/8" wrench doesn''t, you have a 4AN fitting.