The MIL-DTL-38999 Series II connectors feature up to 128 contacts within an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various mounting styles such as front and rear wall mount, jam nut, and box mount receptacles, they offer versatility for different applications. With options for straight, RFI grounding, and standard plugs, each connector is meticulously engineered with 52 insert arrangements and M39029 rear release crimp contacts. Constructed with durable aluminum shells and a range of plating choices including cadmium-free finishes, they ensure reliable performance in demanding conditions. RoHS compliant and designed for 500 mating cycles, these connectors are ideal for military and aerospace applications requiring secure and high-performance electrical connections.