Cotter pins, or split pins, are two-pronged, metal fasteners. You line up the holes in two or more objects that you want to connect, insert the prongs through the holes and bend the prongs apart to secure the objects. Cotter pins can be made of steel, nickel, copper, brass, bronze or aluminum. Multiple types are produced.
Chisel point cotter pins have pointed prong ends. They are made in two varieties: "extended prong," in which one prong is longer than the other, and "even end," in which the prongs are the same length.
Taper point cotter pins have rounded prong ends. They also are made in "extended prong" and "even end" varieties.
Hammerlock cotter pins have one prong that is longer than the other and curves over the end of the other prong. When you hit the pin with a hammer, the shorter prong moves forward, forcing the prongs apart and locking them into place.
Clinch cotter pins have a large head and a curve in one of the prongs. The prongs spring apart automatically when you insert them.
Hairpin cotter pins are also called R-clips because they are shaped like the capital letter "R." You insert the straight prong into a hole near the end of an axle or other shaft, and the bent prong grips the shaft.
How to Properly Install a Cotter Pin
Installing a cotter pin prevents parts from backing out of or slipping off other parts. Standard, straight cotter pins, also called split...
How to Measure a Clevis Pin
A clevis pin is a steel fastener with a head on one end and one or more drilled holes in the shank....
How to Size Cotter Pins
Cotter pins are two-pronged fasteners that have been bent to hold a machine part in place. They are inserted into corresponding holes...
What Are the Different Types of Military Lapel Pins?
U.S. Military lapel pins can mean several different things. They can signify what branch of the military the wearer is or has...
How to Use Bobby Pins to Style Your Hair
Learn how to use bobby pins to style your hair with expert beauty tips in this free hair styling and accessories video...