MIL-DTL-38999 Series II connectors feature up to 128 contacts in an insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. These connectors come in various configurations including front and rear wall mount, jam nut, and box mount receptacles, with straight, RFI grounding, and standard plugs available. Compliant with military specification MIL-DTL-38999 II, they utilize M39029 rear release crimp contacts and are housed in aluminum shells with options for various plating finishes. With a focus on durability and performance, these connectors are suitable for a wide range of applications, ensuring reliable connectivity in demanding environments.