Shank: The smooth area of the fastener between the head and the thread. Screw types vary and some screws do not have a smooth shank. Thread: The ridge that wraps around the cylinder and forms a helix.

We’ve all stripped a few screws ... the screw head long and deep enough to fit a flathead screwdriver. Then turn with the screwdriver to remove. If all else fails, different types of screw ...