The MIL-DTL-38999 Series II connectors are designed for harsh environments, with up to 128 contacts housed in an insert for secure connectivity. Featuring front wall mount, rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts for reliable performance. Constructed with aluminum shells and offering various plating options, including cadmium-free finishes, they ensure durability and corrosion resistance. With a wide operating temperature range of -65°C to 200°C, these connectors are suitable for demanding applications in military and aerospace industries.