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. These connectors utilize a quick-disconnect bayonet coupling mechanism for fast mating and unmating, with various mounting styles and shell sizes available, making them suitable for a range of industrial and aerospace applications.