Robertson screws are a staple (punny, huh? ) around here.
Funny thing I noticed a few years ago was that Americans were beginning to like them but refuse to call them Robertson, but rather squarehead screws. Same idea as the Canadarm, they have to call it the space arm instead. Been kinda reluctant to give us any credit for things since the Avro Arrow which even many American experts admit would still be flying today with great success.