MIL-DTL-38999 Series II connectors feature up to 128 contacts in an insert, offering environmental sealing and a broad operating temperature range from -65 °C to 200 °C. These harsh environment connectors, available in various mounting styles, are designed for durability and reliability in demanding applications. With options for RoHS compliant finishes, including cadmium-free plating, they meet stringent environmental standards. The connectors, crafted from aluminum shells, boast versatility with 52 insert arrangements and M39029 rear release crimp contacts in multiple sizes. Suitable for military and industrial use, they ensure secure and efficient electrical connections in challenging environments.