Circular connectors facilitate the transfer of data, power, and signals between cables and equipment. Their housings are made of materials that withstand continual use, protect against dust and moisture, and accommodate different pin and voltage/current configurations. These plug-and-play connectors have threaded locks in standard inch and metric sizes. They connect and disconnect quickly and are suitable for industrial and automated applications that move or undergo maintenance, diagnostics, and reconfigurations. M8, M12, and 1/2 inch connectors are compact and ideal for tight spaces and small devices. M18, M23, and 7/8 inch connectors have large bodies that fit more complex configurations and handle higher currents. Hoods, housings, and caps contain connections and protect against water, dust, and cable strain. Inserts are used to create specific pin/socket configurations.