screw head with 3 slots - 10 Screwdriver Types You Need in Your Toolbox | The Family Handyman nft888 slot game

Old-timers used to call this a slot screwdriver until they realized every screw head has some type of slot. The paddle-shaped head fits into a single slot that extends across the screw head.

A Robertson screw, also known as a square screw [1] or Scrulox, [2] is a type of with a -shaped socket in the screw head and a corresponding square protrusion on the tool.

Place the loop clockwise on the screw shaft so that when the screw is tightened down the screw head will grip—rather than dislodge—the wire.