The MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts in a rugged insert. Designed for harsh environments, these connectors are environmentally sealed and can operate in temperatures ranging from -65°C to 200°C. Available in various configurations including front wall mount, rear wall mount, and jam nut receptacles, they feature bayonet coupling for secure mating. Built for durability, the connectors come in high-strength aluminum shells with options for different plating finishes such as gold, electroless nickel, and cadmium-free coatings. Meeting military specification MIL-DTL-38999 I, they are ideal for applications requiring reliable and robust electrical connections.