A rivet is a mechanical fastener composed of a head on one end and a cylindrical stem on another (called the tail) which has the appearance of a metal pin.
When installed the rivet is either drilled, placed or punched into a hole, afterwards the tail is then deformed, holding the rivet in place.
The rivet is deformed by pounding or smashing of the tail, which makes the material flatter and usually causes the tail to be expanded by about one and a half times the size of the stem's original diameter.
When finished the tail has the appearance of a dumbbell shape completing the riveted joint.
Riveting can create either lap or butt joints with a variety of different rivet configurations, including single, double and zig-zag formations.
There are eight widely used types of rivets, which include:
A pop rivet is also known as a blind or hollow rivet and is used where you are only able to work with one side of the rivet. A special pop rivet gun or tool pulls the mandrel head into the body of the rivet, which then expands against the blind side of the join. Once it meets the face of the join’s blind side the mandrel snaps, causing the stem to eject to create a tight joint. A pop rivet can be used as a replacement for nuts and bolts, screws, welds and adhesives.
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