The MIL-DTL-38999 Series II connectors offer high performance in harsh environments with up to 128 contacts and a wide operating temperature range of -65 °C to 200 °C. These environmentally sealed 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 ensure durability and reliability. With 52 insert arrangements and M39029 rear release crimp contacts, they provide versatility in connectivity. Suitable for military and industrial applications, these connectors meet stringent specifications for performance and durability.