T-Nut is a type of fastener also known as a Tee Nut, which is used in woodworking, cabinetry, and furniture-making. It is similar to a regular nut, but has small prongs on one end that help it grip onto the wood when inserted into a pre-drilled hole. The other end of the T-Nut has a threaded hole that allows for a bolt or screw to be fastened to it. These nuts are often used to provide a strong, threaded anchor point for attaching legs, casters, or other hardware to wooden furniture or structures.