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 versatility with various mounting options including front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for reliable connectivity. Constructed with aluminum shells and plated in options like electroless nickel and cadmium-free finishes, these connectors ensure durability and performance. Ideal for military and industrial applications, they meet stringent MIL-DTL-38999 II specifications, providing a secure and efficient electrical connection solution in harsh environments.