Describe self-clinching fasteners.
What will be an ideal response?
A self-clinching fastener is any device, usually
threaded, that displaces the material around a mounting hole when pressed into a
properly sized drilled or punched hole. This pressing or squeezing process causes
the displaced sheet material to cold flow into a specially designed annular recess in
the shank or pilot of the fastener. A serrated clinching ring, knurl, ribs, or hex head
prevents the fastener from rotating in the metal when tightening torque is applied to
the mating screw or nut. When properly installed, self-clinching fasteners become a
permanent and integral part of the panel, chassis, bracket, printed circuit board, or
other item in which they are installed.
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