A roll pin is a cylindrical pin with a partially slotted or rolled section that allows it to be compressed for insertion into a hole and then expand to lock it in place. Roll pins are often used in applications where a permanent or semi-permanent fastener is needed, such as in machinery, automotive components, and furniture.
Roll pins are typically made from steel, but they can also be made from other materials such as stainless steel, aluminum, or brass. The size of a roll pin is determined by its diameter and length. Roll pins are available in a variety of diameters and lengths to accommodate a wide range of applications.