Quote:
Originally Posted by Jerry Clayton
In the AN world the number replates to 1/16 inch--so in your case the id size .638 is equalate to 10/16 inch or the #10 an size-------
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The measurement I gave is for the ID size of the fitting I think the AN # is to do with the Army Navy thread, not the bore size.
Measured these AQ fittings, -12an O ring boss has 0.600" ID
-12an 90 degree 0.580" ID
Unknown brand -10an o ring to -12 male has bore size of 0.638"
I guess I can buy a 10-12 adapter fitting and lathe out the bore, but I would prefer to have a nice anodised factory fitting..