What is a Robertson Screw or Robertson Head Screw?
Most of us call a Robertson screw "square drive" or "socket head" screws. They were invented by Canadian Peter Robertson around 1906.
2inch Long Square Robertson S2 Head Screwdriver Bit Set with 1/4inch Hex Shank
Don't Leave Home Without a Robertson (Square) Screwdriver!
Robertson Screw
Machine Screw #10-24 x 1 1/4 inch - Round Head Robertson - Stainless Steel at Edmonton Fasteners and Tools Ltd.
Why aren't square head screws more common? It seems like they would strip less than others., by Cristi, Dec, 2023
Screw Drive Types-A Guide To What Type Of Screw Is This?
Robertson screw - Wikipedia
What is a Robertson Screw or Robertson Head Screw?
Our Products Robertson Screw
Flat Head Square Drive Robertson Screw For Wood Galvanized Steel Fastener
11 Strange Screws You Don't See Every Day
Portals Plus 12 Robertson Head Screw Driver
Pan Head Screw – Robertson Head – Tech – Self-Tapping – No. 8 Screw – 100 pcs/box
The robertson screw head is by far the best in the world. Why is the US so reluctant to use them? - Quora
