MIL-DTL-38999 Series II connectors are designed for rugged environments, with up to 128 contacts housed in a sealed insert. Operating efficiently in temperatures ranging from -65 °C to 200 °C, these connectors offer reliability in extreme conditions. Featuring various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse installation needs. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts for secure connections. Constructed with aluminum shells and offering plating options like electroless nickel, they ensure durability and performance. With RoHS certified finishes, these connectors are ideal for military and industrial applications requiring high-quality, environmentally resistant connectivity.