The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert for high-density connectivity. With an operating temperature range of -65 °C to 200 °C and environmental sealing, these connectors offer reliable performance in demanding conditions. Available in various mounting styles such as front and rear wall mount, jam nut, and box mount receptacles, they provide versatility for different applications. The connectors come in aluminum shells with options for plating, including cadmium-free finishes for RoHS compliance. Utilizing M39029 rear release crimp contacts, they ensure secure connections in size 22D, 22M, 22, 20, 16, and 12. Suitable for military and industrial use, these connectors meet MIL-DTL-38999 II specifications, making them ideal for rugged and mission-critical systems.