The Amphenol PT series and PT-SE series connectors (MIL-DTL-26482 Series I) feature high-density contact configurations within a circular shell. The PT series offers solder contacts, while the PT-SE series provides high-performance crimp contacts, and PT-CE offers a commercial crimp option. These connectors include a quick-disconnect bayonet coupling mechanism for fast mating and separation, along with various mounting styles and shell sizes to suit different applications.