MIL-DTL-38999 Series II connectors offer robust connectivity with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, these connectors boast a wide operating temperature range of -65 °C to 200 °C. Featuring various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse installation needs. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts for reliable performance. Crafted from aluminum, they come in multiple plating options such as cadmium and nickel, ensuring durability. With RoHS certified finishes, they meet environmental standards while offering superior conductivity and ingress protection. Ideal for military and industrial applications, these connectors guarantee secure and efficient electrical connections in challenging settings.