On Thu, 05 May 2005 23:20:18 GMT, "Bruce A. Frank"
wrote:

I have a print that, as best I can read it, calls for a fitting # AN
867-6. Is that a standard 3/8 tapered (NPT) thread fitting for welding
on fuel tanks? Can anyone point me to a chart that has pictures of the
AN fittings and possibly a translation to equiv. pipe or tube
specifications?

just to put the correct answer here in the replies.
an867-6 is a 3/4inch female pipe thread in a weldable fitting which is
2 1/4 inches diameter by 13/16th of an inch high.

aircraft spruce has them
Stealth Pilot