The MIL-DTL-38999 Series II connectors are designed for harsh environments, offering up to 128 contacts in an insert with front and rear wall mount options, jam nut, and box mount receptacles. With a wide operating temperature range from -65 °C to 200 °C, these connectors provide reliable performance in extreme conditions. Featuring thin walls and restricted lengths, they are ideal for space-saving applications. Available in 9 shell sizes and 52 insert arrangements, these connectors use M39029 rear release crimp contacts, ensuring secure connections. Constructed with aluminum shells and various plating options, including cadmium-free finishes, they meet RoHS certification standards for environmental compliance. Perfect for military and industrial use, these MIL-DTL-38999 Series II connectors guarantee durability and longevity in demanding settings.