Phillips is probably the most common head recess used for truss head screws. It features four points in a cross-like shape. Other truss heads have a slotted or hex recess.Truss head screws are threaded fasteners with a mushroom-shaped head. They have a wide and slightly rounded head that resembles a mushroom. With their mushroom-shaped head, truss head screws will protrude out of the workpieces in which they are installed.
