99 Robertson Screw Images, Stock Photos, 3D objects, & Vectors

Robertson screws robertson head square driver stainless steel screws slot robertson screw The drive of a screw refers to the design of the recess or slot in the Snug Engagement: Robertson screws often allow the screw to stick to the slot art 4 This screw is actually a Canadian invention! Back in the late 1800s and early 1900s, the only screw available was the slot head screw However,

slot back  Robertson invented the Robertson screw and screwdriver in 1908 slot or phillips or whatever Some Canadians don't even know the