pin slotCoiled Pins, Slotted Pins, and Solid Pins are all commonly used to stop the movement of one component relative to another. For example, Coiled Pins are often used to prevent overSlotted spring pin (1) and washer (2) used to secure a shaft (3). A spring pin (also called tension pin or roll pin) is a mechanical fastener that secures the position of two or more parts of a