you can noramlly get them at hardware stores. They are brass compression fittings. You can find most of everything else there if you need to do fittings locally.
If you are wanting actual blue anodized AN fittings, www.aircraftspruce.com , just search for AN fitting
dropd80s
+1y
AN I've heard stands for a Army/Navy grade or that its an aluminum fitting, Im not sure which is true, but you can get JIC which is the same thing at local hydraulic shops if you using it for your air managment. If your useing it for fuel i'de get some from JEGS or Summit
bodydropped85
+1y
jegs or summit or your local race shop. yes AN stands for army/navy and there aluminum.