The MIL-DTL-38999 Series II connectors are designed for rugged environments, featuring up to 128 contacts in an insert and offering secure environmental sealing. With an operating temperature range from -65 °C to 200 °C, these connectors are suitable for a wide range of applications. Available in various mounting styles such as front wall mount, rear wall mount, jam nut, and box mount receptacles, they provide versatility in installation. The connectors come in 9 shell sizes and 52 insert arrangements, utilizing M39029 rear release crimp contacts for reliable connectivity. Constructed with aluminum shells and offering plating options like electroless nickel and cadmium finishes, they ensure durability and performance. The MIL-DTL-38999 Series II connectors meet rigorous military specifications for quality and reliability, making them ideal for demanding environments.