Split Pins. Pearl Consumables Or Wot Nots Available here. Sometimes you need to hold in place something you slid onto a metal cylinder and screwing it on isn’t an option. This situation is what split pins are designed for. They slide through a hole in the cylinder and, once through to the other side, the end of the pin is bent over. This bend ensures the pin won’t slide back out. These wonderful little pins come in a variety of lengths and sizes, but, once installed, they all do the same job: making sure what they’re blocking doesn’t slide off the cylinder. Check out our selection, and we’re sure you’ll find the split pins you need.