MIL-DTL-38999 Series II connectors feature up to 128 contacts in an insert, boasting environmental sealing and an impressive operating temperature range from -65 °C to 200 °C. These harsh environment connectors come in various configurations such as front wall mount, rear wall mount, jam nut, rear box mount, and front box mount receptacles, catering to diverse application needs. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12. Crafted from aluminum, with plating options including light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, these connectors prioritize durability and performance. Meeting MIL-DTL-38999 II standards, they ensure reliable connectivity in demanding environments, with RoHS compliant finishes for environmental responsibility.