The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With a wide operating temperature range from -65 °C to 200 °C, they offer reliable performance in extreme conditions. Available in various mounting styles, including front and rear wall mount, jam nut, and box mount receptacles, these connectors meet military specifications for durability. Constructed with aluminum shells and offering multiple plating options, they ensure long-lasting functionality. The connectors, featuring Gold-plated contacts and EMI/RFI shielding, are suitable for high-reliability applications in aerospace, defense, and industrial settings.