Which type of pin is used for securing connections in equipment?

A cotter pin is specifically designed to secure connections in various types of equipment. It is a simple fastening device that consists of a bent wire, often used in conjunction with a hole or a clevis to keep components firmly in place. When properly installed, the ends of the cotter pin are split apart after insertion to ensure that it cannot come loose easily, making it an effective solution for maintaining secure connections in mechanical applications.

In contrast, safety pins are primarily designed for fabric fastening and not typically used in mechanical connections. Screw pins, while they can serve a similar purpose, are generally threaded and require a nut to secure them, which may not be suitable for all situations. Lock pins are also used to secure components, but they come in a variety of designs and may not provide the same reliability as cotter pins in certain equipment applications. Thus, cotter pins stand out as the preferred choice for ensuring that connections remain secure in operational settings.