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Subject:Re: Heli-Coil tap and drill size needed as soon as poss
From:Austin
Date:Wed, 27 Jun 2001 20:08:52 -0700

At 11:13 PM 6/26/2001, you wrote:

>American drill sizes half-inch and under include 1/16-1/2 by 64ths, then
>numbers 0 (a bit under 1/4) to 80 (a bit under 0.02), then letters A (close
>to 1/4) to Z (close to 1/2).
>
>The metric folks tend to fall on the floor in hysterics when they think
>about this... <g>
>
>david

Better yet (in the chuckle chuckle sense) is to look up an "E" drill:
0.2500" diameter, which also just happens to be 1/4" - go figure!

(actually, there's probably a story there somewhere....)

Austin

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