Clinch Screw

A Clinch Screw is a fastener, usually threaded, that, while pressed into ductile metallic, displaces the host material across the mounting hollow, inflicting it to cold flow into a particularly designed annular recess within the shank or pilot of the fastener, the major advantage of clinch screws is its high torque-out resistance (which determines the fastener's ability to resist rotation within the material)