The MIL-DTL-38999 Series II connectors are designed for harsh environments, offering up to 128 contacts in an insert for secure connectivity. With front and rear wall mount options, as well as jam nut and box mount receptacles, they provide versatile installation possibilities. These connectors feature a wide operating temperature range from -65°C to 200°C, ensuring reliability in extreme conditions. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for efficient assembly. Constructed with aluminum shells and various plating options, including cadmium-free finishes, they meet RoHS compliance standards. Perfect for military and industrial applications, these connectors provide exceptional performance and durability.