What is a square screwdriver called? What is a Robertson Screw or Robertson Head Screw? Most of us call Robertson screws “square drive” or “socket head” screws. They were invented by Canadian traveling salesman Peter Robertson around 1906.
What is a square head screwdriver used for? Square Screwdriver
The square-headed screwdriver fits screws with a square-shaped recess. It was invented to reduce the cam-out issue of the slotted screws and therefore speed up the fastening process.
How do you unscrew a square screw without a screwdriver?
Is there a square screwdriver?
|Included Components||(3) Square recess screwdrivers: S1, S2, S3|
|Item Weight||10.9 ounces|