MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert with environmental sealing. Operating between -65 °C and 200 °C, these connectors offer various mounting options such as front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts and come in aluminum shells with multiple plating options. With a Bayonet coupling and gold contact plating, they ensure reliable connectivity in demanding conditions. Meeting MIL-DTL-38999 II specifications, these connectors are ideal for applications requiring durability and performance in extreme environments.