Among other uses, it makes the actual manufacture of the plug a little
less error prone, and easier to make machines that sort and mold them
automatically.

Have a bunch of contacts made by some metal press company, ship them in
in a bucket, put them in the vibratory feeder, and let the machines pop
out fresh plugs.  The workers can go around occasionally and free stuck
parts, and remove malformed parts from the feeders occasionally.

-Adam

Robert Ussery wrote:

>Hi, all.
>Just a spot of trivia re. the U.S. style 2-prong outlets. Why do they have the little holes in the prongs? I've noticed frequently cheaper devices won't have these holes. Are they just to give the spring contacts in the outlet a better grip, or what?
>Just curious...
>Thanks!
>
>- Robert
>
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