Quote:
Originally Posted by Mortis
Thats why the Robertson head screws are vastly superior  5 different sizes and all can be used upside down (screwed in to something over your head). I can't count the number of screws I've driven through 3 inch planks, couple hundred thousand at least!
"A Robertson, also known as a square, screw drive has a square-shaped socket in the screw head and a square protrusion on the tool. Both the tool and the socket have a taper to make inserting the tool easier. Robertson screws are used mainly in Canada (where they are very common), though they can be found elsewhere."
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I hate and loathe those heads. putting in telephone switches, those heads have become more and more common. I have worn out SO MANY drivers on those damn heads! give me good ol' self tapping sheet metal screws any day!