The design of a hand screw clamp means it only has three basic parts; two jaws, two handles, and two screws.
Jaws
The jaws are the parts which hold on to a workpiece to keep it in place.
A hand screw clamp has two jaws, which are made out of wood.
The screws run through both jaws, connecting the two together. By adjusting these screws, the jaws can be angled or offset to accommodate for tapered workpieces.
Screws
A hand screw clamp has two screws which control the movement of the jaws when rotated.
Handles
The clamp also has two handles, one connected to each screw.
The handles are usually made out of wood and are shaped to provide the user with a firm and comfortable grip during use.