MIL-DTL-38999 Series II connectors are designed for harsh environments, with up to 128 contacts in an insert for robust connectivity. These wall-mounting receptacles feature various mounting options, including front and rear wall mount, jam nut, and box mount configurations. Offering reliable performance in extreme temperatures ranging from -65 °C to 200 °C, they are ideal for military and aerospace applications. The connectors utilize M39029 rear release crimp contacts, ensuring secure and efficient connections. With a selection of plating options, including cadmium-free finishes, they meet RoHS compliance standards. Made with durable aluminum shells, these connectors are built to withstand rugged conditions, making them essential for demanding environments.