The Amphenol PT series and PT-SE series connectors (MIL-DTL-26482 Series I) feature high-density contact arrangements in a circular shell. The PT series supports solder contacts, while the PT-SE series offers high-performance crimp contacts. These connectors utilize a quick-disconnect bayonet coupling for fast mating and unmating, and are available in various mounting styles and shell sizes. The specified part is a PT-SE series connector with a 12-position crimp contact configuration, suitable for reliable electrical connections.