"Leon" wrote in message
...

"Greg D." wrote in message
...
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 have seen them. I believe that they are regular square drive rejects.
They were double stamped and the screw turned slightly on the second
stamp. ;~)

Peachy. Once they're galvanized, you'll have _two_ recesses the square
drive won't fit.