The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert for versatile connectivity. With an impressive operating temperature range of -65 °C to 200 °C, these connectors are ideal for demanding applications. Available in various mounting options such as front wall mount, rear wall mount, jam nut, and box mount receptacles, they offer flexibility in installation. The connectors come in 9 shell sizes and 52 insert arrangements, accommodating different contact sizes for efficient connection. Constructed with aluminum shells and offering plating options including electroless nickel, they ensure durability and reliability. These military-spec connectors, with RoHS compliant finishes, are suitable for a wide range of industries requiring rugged and high-performance electrical connectivity.