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 connectors are equipped with solder contacts, while the PT-SE series offers high-performance crimp contacts, and the PT-CE series provides a commercial crimp option. These circular connectors utilize a quick-disconnect bayonet coupling mechanism for rapid mating and unmating, with various mounting styles and shell sizes available.