We are familier with the traditional external hexagon drive bolts and the Pozi and Phillips drive screws, up there with this group are the high grade Socket products (Allen).
Becoming more popular and also demanding a place as a major player is the Torx screw.
Never out of fashion particulaly in Canada is the square drive.
More to the modern taste are the 12 point screws
Socket Head screws
Torx drive
12 Point
Square Drive
drives
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