MIL-DTL-38999 Series II connectors feature up to 128 contacts, offering durable environmental sealing and a wide operating temperature range from -65 °C to 200 °C. These harsh environment connectors come in various configurations, including front and rear wall mount, jam nut, and box mount receptacles. With 52 insert arrangements and M39029 rear release crimp contacts, they provide versatility for different applications. Constructed with aluminum shells and available in RoHS compliant finishes, such as electroless nickel plating, they ensure reliable performance in demanding environments. These connectors, designed for military specifications, guarantee secure and efficient electrical connections for critical operations.