types of screw heads for Dummies
A slotted or flat push screw head requires a flat blade or slotted screwdriver or bit to tighten or loosen. These are made using a slotted flat line through the head to permit a flat blade to tighten/loosen this kind of head. In comparison to one other screw head truss screw head are broader and they may have a rounded surface. Truss head screws a