MIL-DTL-38999 Series II connectors are designed for demanding environments, offering up to 128 contacts in a single insert. With a wide operating temperature range of -65 °C to 200 °C, these connectors are built to withstand extreme conditions. Featuring various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they provide versatility in installation. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts for secure connections. Crafted from aluminum with plating options including gold, electroless nickel, and cadmium-free finishes, these connectors ensure reliable performance with RoHS compliance. Suitable for military and industrial applications, they guarantee durability and conductivity in harsh environments.