The MIL-DTL-38999 Series II connectors offer high-performance connectivity with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, these connectors feature various mounting options such as front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts for reliable connections. With a wide range of plating options including cadmium-free finishes, these connectors ensure durability and compliance with RoHS standards. Operating in temperatures ranging from -65 °C to 200 °C, they are ideal for military and industrial applications requiring rugged and reliable electrical connections.