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 provides solder contacts, while the PT-SE series offers high-performance crimp contacts, and the PT-CE series includes a commercial crimp option. These circular connectors utilize a quick-disconnect bayonet coupling mechanism for ease of mating and unmating. They are available in various mounting styles and shell sizes, making them versatile for different applications.