[GreenKeys] Weird hardware size -- getting OT

[Nick England]

 I learned something new today:
The integer sizes can be converted to the actual diameter by using the
formula 0.060 + (0.013 × number). For example, a #4 screw is 0.060 + (0.013
× 4) = 0.060 + 0.052 = 0.112 inches in diameter.

Nick England K4NYW
www.navy-radio.com


On Fri, Nov 25, 2022 at 4:16 PM John, W9DDD <w9ddd at tapr.org> wrote:

>  Ah yes, the numbered sizes 0 through 12 (I think that's the biggest)
> Perhaps related to wire and sheet metal gauges?  And the thickness isn't
> independent of the metal involved either.  Maybe we're stuck with it
> because after you go to all the trouble to memorize it all you're reluctant
> to give it up.
>
>
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