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