The MIL-DTL-38999 Series II connectors are designed for rugged environments, with up to 128 contacts enclosed in a secure insert. These connectors are environmentally sealed and can withstand temperatures ranging from -65 °C to 200 °C. Featuring various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts for reliable connections. Constructed with aluminum shells and offering multiple plating options, including cadmium-free finishes, they meet stringent military specifications. The straight plug configuration with 16 gold-plated contacts ensures high conductivity and durability. Suitable for harsh environments, these MIL-DTL-38999 Series II connectors are ideal for demanding applications in aerospace, defense, and industrial sectors.