The MIL-DTL-38999 Series II connectors are designed for harsh environments, offering up to 128 contacts in an environmentally sealed insert. With an operating temperature range from -65 °C to 200 °C, they ensure reliable performance in extreme conditions. Available in various mounting styles such as front and rear wall mount, jam nut, and box mount receptacles, these connectors feature 52 insert arrangements with M39029 crimp contacts. Constructed with aluminum shells and plated in options like electroless nickel and cadmium, they meet military specifications for durability. Ideal for military and aerospace applications, these connectors guarantee secure and efficient electrical connections in challenging settings.