MIL-DTL-38999 Series II connectors offer a high-performance solution with up to 128 contacts in a single insert, ideal for harsh environments. Featuring various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, these connectors ensure versatile installation. With a wide operating temperature range from -65 °C to 200 °C, they guarantee reliable performance in extreme conditions. Constructed with aluminum shells and available in different plating options including cadmium-free finishes, they meet strict military specifications for durability. Utilizing M39029 rear release crimp contacts, these connectors provide secure and efficient connections. Suitable for applications requiring EMI/RFI shielding, they offer excellent conductivity and environmental resistance. With a service rating of I and mating life of 500 cycles, they are designed for long-lasting performance in demanding environments.