How would I make a port into which a male SAE/JIC 37 degree flare fitting would connect?
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M$3 Answers
Most carbide grinding shops can make a port cutting tool to cut the flange at the bottom of the hole. Then you need a bottoming tap.
http://www.dentsport.com/gallery/v/dsg/tech/thread/
show the threads standards for the tap you will need.
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M$
Assuming you have a mill:
The ideal tool would be an SAE J516 (or JIC/AN) Port Contour Cutter of the correct series. Also known as a Port Counterbore. Machines the cone and minor thread diameter in one step. It looks like this, only the below is for SAE J514:
http://www.toolspecialty.com/porttools/specs/saespecs.php
A small enough indexable counterbore tool would work, too, for just the (74 degree included angle) cone section. You would need to bore the minor diameter separately, then thread with blind tap. The only indexable counterbore tools I found were .750 and 1.000 shank, and way to big to fit into common size fittings.
I'm sure somebody makes this tooling, but I gave up buying online after an hour. Tried Thomas Register, Parker Catalog, several cutting tool places, but no luck. Sorry.
Web searching guided by limited machining experience.
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M$
You can leave an optional "tip" with Mahalo's virtual currency, Mahalo Dollars. If you are asking a difficult question that might require some research, or if you'd like a wide variety of feedback, a higher tip often leads to more answers to your question.
M$
