The MIL-DTL-38999 Series II connectors feature up to 128 contacts in an insert, designed for harsh environments with operating temperatures ranging from -65 °C to 200 °C. Offering various mounting options such as front wall, rear wall, jam nut, and box mount receptacles, they ensure secure connections. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts for reliable performance. Constructed with aluminum shells and offering different plating options, including RoHS certified finishes, they guarantee durability and compliance. Suitable for military and industrial applications, these connectors offer exceptional conductivity and environmental resistance, making them ideal for demanding scenarios.