PEM nut is a threaded fastener or stand-off that is attached to sheet of metal. They are attached by being pressed with great force so that the end of the nut is expanded in order to stay locked and clinched into the sheet metal
A PEM nut also known as Self-clinching whcih is an internally threaded fastener, when pressed into ductile metal, displaces the host material around the mounting hole, causing it to cold flow into a specially designed annular recess in the shank of the fastener. A serrated clinching ring prevents the fastener from rotating in the host material once it have been properly inserted. Thus a PEM nut becomes a permanent part of the host material offering strong, load bearing threads in relatively thin sheets of metal. The generic term for this type of fastener is "self-clinching nut".
(Reference by Wikipedia)
Advantage of Self-Clinching parts:
- Provide strong threads in metal as thin as 0.20"/.51MM
- Maybe installed using any parallel acting squeezing force.
- Provide high pushout and torque-out resistance
- Do not require special hole preparation, such as chamfering and deburring.
- Reverse side of metal sheet remains flush.
- No retapping necessary after application
- Low installed costs.
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