The MIL-DTL-38999 Series II connectors are designed for harsh environments, offering reliable performance with up to 128 contacts in an insert. Environmentally sealed and capable of operating in temperatures ranging from -65 °C to 200 °C, these connectors are ideal for demanding applications. Featuring various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they provide flexibility in installation. With a selection of shell sizes and insert arrangements, these connectors accommodate different needs, utilizing M39029 rear release crimp contacts. Constructed with aluminum shells and available in plating options such as electroless nickel and cadmium finishes, they ensure durability and reliability. Suitable for military and industrial use, these connectors meet stringent MIL-DTL-38999 II specifications.