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

To: "'Tony Clark'" <lotus.tony@airmail.net>,
Subject: RE: Drill size for 1/8" NPT tap?
From: Ken Landaiche <ken.landaiche@dlcc.com>
Date: Fri, 18 Dec 1998 10:02:31 -0800
What do you mean by "respect the taper"? I have tapped straight holes,
so I have the basic idea. But I never did a tapered hole.

Ken Landaiche

-----Original Message-----
From: Tony Clark [mailto:lotus.tony@airmail.net]

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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