MIL-DTL-38999 Series II connectors boast up to 128 contacts in an insert, offering robust environmental sealing for a wide temperature range of -65 °C to 200 °C. Designed for harsh environments, these connectors come in various styles including front and rear wall mounts, jam nut, and box mounts. Available in 9 shell sizes and 52 insert arrangements, they feature M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12. Crafted from aluminum with plating options like electroless nickel, they meet military specifications for reliability. Perfect for demanding applications, these connectors ensure secure and efficient electrical connections in challenging conditions.