Din1624 4 Pronged Zinc Plated Carbon Steel T-Nuts Tee Nut

A T-nut, T nut, or tee nut (also known as a blind nut, which can however also refer to a rivet nut or an insert nut, and likewise drive-in nut) is a type of nut used to fasten a wood, particle or composite materials workpiece, leaving a flush surface.

It has a long, thin body and a flange at one end, resembling a T in profile. The flanges of T-nuts often have hooks or serrations on the prongs that dig into a wooden work piece as the bolt is tightened from the opposite side of the piece, providing better retention.