Spring pins, also known as slotted pins are formed from sheet metal rolled into a partial cylinder, with a slot across its length, and chamfered edges. These are the most universal, economical, and time-saving fasteners on today's market. Spring pins replace a wide variety of different fasteners in more general applications.

They're quite affordable, as they're usually made in one piece, and cut-down to the preferred or required size, but there are pre-cut lengths available on the market. They have a larger diameter than the hole in which they're installed, allowing them to compress along their length as they're pushed into the hole.

This creates tension that secures the pin in place. The installation is quite forward, and usually requires only a few gentle taps with a hammer, provided that the hole is pre-fabricated. The removal usually requires a pin puncher tool, and a hammer.