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