MIL-DTL-38999 Series I connectors are designed for rugged environments, offering up to 128 contacts in a sealed insert. With an operating temperature range of -65°C to 200°C, these connectors ensure reliable performance even in extreme conditions. Available in various shell sizes and insert arrangements, they feature front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs. Constructed with high-strength aluminum shells and offering a range of plating options, including cadmium-free finishes, these connectors meet stringent military specifications. With gold-plated contacts and a bayonet coupling design, they provide secure and durable electrical connections for aerospace, defense, and other demanding applications.