MIL-DTL-38999 Series II connectors are designed for rugged environments, with up to 128 contacts sealed for protection against harsh conditions. Operating reliably in temperatures ranging from -65 °C to 200 °C, these connectors offer versatile mounting options including front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes with 52 insert arrangements, they feature gold-plated, removable crimp contacts for secure connections. Constructed from aluminum with various plating options, such as electroless nickel and cadmium olive drab, these connectors ensure conductivity and durability. Meeting military specifications, they are ideal for applications requiring reliable performance under extreme circumstances.