MIL-DTL-38999 Series II connectors feature up to 128 contacts in an insert, designed for harsh environments with operating temperatures ranging from -65 °C to 200 °C. Offering various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they ensure secure connectivity. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts for reliable performance. Constructed with aluminum shells and offering plating options like electroless nickel and cadmium finishes, they meet stringent military specifications for durability. With a contact gender of male and a contact style of pin, these connectors are suitable for environment-resistant applications requiring rugged connectivity solutions.