[SEL] 1/2" - 12 threads

[Dave Rotigel]

Hi Glenn,
         I had heard this story before. But since I had only heard it from 
one person I didn't want to spread it around as THE TRUTH! It's always good 
to have more than one source!
         Dave

At 09:28 PM 3/12/2006, you wrote:
>OK Dave,
>
>I will tell my story.  The other day I had a casting that needed to be
>drilled and tapped for a set screw.  Since there was plenty of room, I
>decided a 1/2" diameter screw would be fine.  I looked in my set screw
>collection and found several nice square headed ones that should fit the
>job.  I drilled a 27/64" hole and got out my 1/2" - 13 tap and put the
>threads in.  I took a set screw and started it in but it only went about a
>turn and a half.  H -mmmm.  I buffed the threads and tried again. NO luck.
>I tried a different screw.  I ran the tap through the hole again.  Still no
>luck.  I tried a wrench on the set screw and it only got tighter.  You know
>where this is going now.  So -- I checked the threads on the set screw -
>surprise - they were 1/2" - 12.  If I had known, I had a 1/2" - 12 tap in
>the tool chest.  Anyway, I have seven very fine 1/2" x 12 an inch long if
>anyone wants any.  I suspect that I saw them at a flea market and bought a
>few and threw them in with the rest.  Such is life.
>
>Glenn Karch
>Haubstadt, IN, USA
>Hercules Historian
>
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