Thin sheets of metal, plastic, or other materials can be clamped together from one side, by means of blind rivets, better known as pop rivets.
A tubular rivet is inserted in a hole which is drilled onto two sheets.
It is then clinched by withdrawing a nail found inside the rivet. These fasteners are installed with a manual, pneumatic or electric rivet gun, to connect metal and other pieces together.
The plate diameter of some pop rivets, is larger than that of others. These rivets do not easily go through the surface of the material which is being clamped. In fact, the pop rivets with an extra large head are used to tie on materials such as leather and canvas.
All Blackspur blind rivets which have a large plate, can be identified by stock codes which end with L.