On Mar 3, 9:50 am, (Paul Tomblin) wrote:
In a previous article, "Morgans" said:

I don't know if you have the options of choosing the type of heads on the
screws you are using, but for my money you can't beat torx and square socket
screws.

THEY don't let bits jump out, or cam out.

Do Americans "do" Robertson screws? Back when I was a college student,
one of my buddies did his work term at SPAR Aerospace, and they sent an
engineering sample or ground simulator of the Canadarm down to NASA, and
got an urgent call to send down screwdrivers that fit these funny square
socket screws.

They are used some places. There's a sunroom manufacturer in Detroit
that uses
small self tapping Robertsons.