On 12/05/2007, at 10:45 AM, Ronn! Blankenship wrote:

> Not that kind.  Get your mind out of the gutter.
>
>
> There are screws which have a hexagonal-shaped depression in the head
> which require a tool which is variously called an "Allen wrench" or a
> "hex key" to turn them.  Then there are some which have a hexagonal
> depression in the head but instead of being flat the bottom of the
> depression has a raised bump in the center, which means that a
> regular Allen wrench or hex key will not go far enough down into the
> depression to turn them.  (Which I think is the point.)  Any of you
> engineering types or handypersons know what the latter are properly
> called?

Torx.

http://en.wikipedia.org/wiki/Torx

Charlie
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