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Re: Drill size for 1/8" NPT tap?

To: "Chris Heerschap" <Heerschap@eng.kns.com>,
Subject: Re: Drill size for 1/8" NPT tap?
From: "Tony Clark" <lotus.tony@airmail.net>
Date: Thu, 17 Dec 1998 20:13:06 -0600
Chris,

My L. S. Starrett Co chart shows the following tap-drill sizes for NPT:

1/8- 27        R
1/4-18        7/16
3/8-18        37/64
1/2-14        23/32
3/4-14        59/64

Remember to respect the taper . . .practice on a scrap.

Cheers,
Tony




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