MIL-DTL-38999 Series II connectors are designed for rugged environments, with up to 128 contacts housed in a sealed insert. Operating in temperatures ranging from -65 °C to 200 °C, these connectors offer reliability in extreme conditions. Featuring various mounting options such as 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 secure connections. Constructed with aluminum shells and offering plating options including cadmium and nickel, they ensure durability and performance. With RoHS certified finishes available, these connectors meet environmental standards while providing excellent conductivity and ingress protection. Suitable for military and industrial applications, they guarantee 500 mating cycles and are ideal for demanding environments.