Metal Pop Rivets are multi-piece rivet assemblies, which can be installed from one side of the piece of work. Metal pop rivets have traditionally been used on leading edges of aircraft, trailing edges, and closeout areas that are restricted to accessing one side of the structure. Present pop riveting use has grown to include many additional areas of the aircraft and other mass manufacturing industries to minimize labour costs and tackle strong riveting ergonomics. Or it refers to a technique used to join thin pieces of metal and to join plastic sheet, too. The pop Rivet pin is often used to move the rivet and the rivet is partially disfigured to connect metal or plastic parts when this happens. That's explained in more detail below:

• This technique is used if the metal or plastic is weak and the joint must not be very solid. It is perfect to connect aluminium or even slim sheets of plastic. In situations where access to both sides of a component is minimal, a hole is first perforated through the joining pieces.

• Then a metal pop rivet is inserted through the drilled opening, and the body of the rivet comes into contact with the pieces. A pop-rivet gun is placed on the rivet, pulling the mandrel into the body of the rivet, causing it to expand and grip the joining parts. The mandrel snaps once it is gripped, holding the rivet permanently in place. This results in a joint being localised.
Now, one can easily understand what is the work of metal pop rivet and it’s importance also.