Npt thread milling pre hole sizes - CNCzone.com-The Largest Machinist Community on the net!

04-11-2007, 09:51 AM

magneto259 magneto259 is offline

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Npt thread milling pre hole sizes

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Should I use the same size pre hole for thread milling pipe threads as I would regular tapping? Thanks in advance!

04-11-2007, 08:52 PM

Join Date: Dec 2006

Location: USA

Posts: 91

BOre them to the drill tap chart and you will get great threads.

04-12-2007, 06:33 AM

magneto259 magneto259 is offline

Join Date: Apr 2007

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Sweet thanks again.

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