On Thu, 15 Oct 2009 17:07:58 GMT, (GregS)
wrote:

In article , Jim Thompson wrote:
Does this exist...

http://analog-innovations.com/SED/BallAndSlot.pdf

Ball and _Slot_ as opposed to the usual Ball and Socket.

Low load. Hobby size... maybe 1/4" to 1/2" ball.

...Jim Thompson


I have seen square top screws inserted and will not twist when you tighten.

greg

Commonly referred to as a "stove bolt". (not commonly, That IS what it
is called)