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04:09 PM

Square head screws are commonly known as Robertson's named after the guy who invented them in 1909 http://www.robertsonscrew.com/ For some reason everyone knows Mr. Phillip but Mr. Robertson is the square head guy. They have been used in Canada for quite some time.

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bparanoid Guest Posts: n/a	04.20.2011, 04:08 PM Square head screws are commonly known as Robertson's named after the guy who invented them in 1909 http://www.robertsonscrew.com/ For some reason everyone knows Mr. Phillip but Mr. Robertson is the square head guy. They have been used in Canada for quite some time. Last edited by bparanoid; 04.20.2011 at 04:09 PM.