With a deeper drive than flat and rounded head screws, socket head screws withstand more torque for a tighter hold. Install in a counterbored hole or above the surface.

A cylindrical shoulder under the head allows parts to rotate around and slide along its length, so these screws are often used to guide and align components.

Thumb screws provide a secure grip for tightening and loosening by hand.

While other screws and bolts require holes with threads, tapping screws create their own threads.