MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert with environmental sealing. Operating between -65 °C and 200 °C, they offer reliable performance in extreme conditions. Available in various mount types including front wall, rear wall, and box mount, these connectors come in 9 shell sizes and 52 insert arrangements. Utilizing M39029 rear release crimp contacts, they ensure secure connections. Constructed with aluminum shells and offering plating options like electroless nickel and cadmium finishes, they provide durability and corrosion resistance. With a focus on quality and performance, these connectors meet stringent military specifications, making them ideal for demanding applications.