On Fri, 10 Nov 2006 19:21:02 -0500, Greg D. wrote:

Hi,

I was flipping through a magazine last week and saw an advertisement
on a new type of screws. It's like a Robertson head but actually it's
got two square heads within each other.


I don't suppose you saw the ones used some years ago on US built
mobile homes. Looks like a 'butterfly' shape called Kluthe or clutch?

Pete