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 offers a commercial crimp option. These circular connectors utilize a quick-disconnect bayonet coupling mechanism for easy mating and unmating, and they are available in various mounting styles and shell sizes.