MIL-DTL-38999 Series II connectors feature up to 128 contacts in an insert, with environmental sealing and an operating temperature range of -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. Available in aluminum shells with multiple plating options, they offer reliable performance in demanding conditions. Utilizing M39029 rear release crimp contacts, they ensure secure connectivity in aerospace and military applications. RoHS compliant finishes are available, making them suitable for diverse industries.