MIL-DTL-38999 Series II connectors are designed for rugged environments, featuring up to 128 contacts within an insert. With an impressive operating temperature range of -65 °C to 200 °C, these connectors offer reliability in extreme conditions. Available in various mounting styles including front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse installation needs. The connectors come in 9 shell sizes and 52 insert arrangements, accommodating M39029 rear release crimp contacts in different sizes. Constructed with aluminum shells and offered with multiple plating options including cadmium and nickel, they ensure durability and corrosion resistance. These connectors, compliant with RoHS regulations, are ideal for military and harsh environment applications.