MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert and offering a wide operating temperature range of -65 °C to 200 °C. These environmentally sealed connectors come in various styles including front and rear wall mount, jam nut, and box mount receptacles. With options for straight, RFI grounding, and standard plugs, they cater to diverse connectivity needs. The connectors, compliant with military specification MIL-DTL-38999 II, boast durable aluminum shells with plating options like electroless nickel for enhanced protection. Utilizing M39029 rear release crimp contacts, they ensure secure connections in applications requiring reliability and ruggedness. Suitable for military, aerospace, and industrial use, these connectors guarantee performance in demanding conditions.