Dowel pins are a headless straight pin with a chamfered end on one end and a rounded end on the other.

Cotter pins are metal fasteners made to be inserted into slots or holes to secure an assembly. One end extends slightly beyond the other end. Ideal to anchor assemblies and hold them in place by spreading the metal wires outward.

Taper pin is a solid cylindrical pin that uniformly and slightly tapers down the length.

Clevis pin is part of a three-piece fastener (commonly called a shackle). Clevis pins have a domed head at one end and either a cross hole or threaded shank on the other.

Roll pin is a headless pin, with a slit down its length.

Hitch pin has a head (handle) on one end to grasp and a hole across the bottom diameter to insert an R-clip.