The Amphenol PT series and PT-SE series connectors (MIL-DTL-26482 Series I) feature high-density contacts within a circular shell. The PT series provides solder contacts, while the PT-SE series offers high-performance crimp contacts, and the PT-CE series includes commercial crimp options. These circular connectors include a quick-disconnect bayonet coupling for easy mating and disconnection, along with various mounting styles and shell sizes.