Eliminate the need for a separate washer—these screws distribute pressure where the screw meets the surface without taking up as much space as a washer.

A domed head sits above the surface of your material. Includes screws such as pan, button, binding, and truss head screws.

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.