MIL-DTL-38999 Series II connectors, designed for harsh environments, feature up to 128 contacts enclosed in an insert for secure connections. With a wide operating temperature range of -65 °C to 200 °C, these connectors are suitable for diverse applications. Available in various configurations such as front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. The aluminum shells come with different plating options, including cadmium-free finishes for RoHS compliance. Utilizing M39029 rear release crimp contacts, these connectors ensure reliable performance. With a straight plug design, EMI shielding, and bayonet coupling, they meet military specifications for durability and functionality in demanding environments.