MIL-DTL-38999 Series II connectors feature up to 128 contacts in an insert, offering environmental sealing and a broad operating temperature range of -65°C to 200°C. These harsh environment thin-walled connectors come in various configurations including front wall mount, rear wall mount, jam nut, and more, with receptacles designed for diverse applications. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. Constructed with durable aluminum shells and plated in options like electroless nickel and cadmium-free finishes, these connectors ensure reliability in demanding environments. RoHS compliance and a service rating of I make them ideal for military and industrial use.