The 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. Available in various mounting styles including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in connectivity solutions. With options for straight, RFI grounding, and standard plugs, these connectors come in 9 shell sizes and 52 insert arrangements. Utilizing M39029 rear release crimp contacts, they ensure secure and efficient connections. Crafted from aluminum with plating options such as cadmium and nickel, they guarantee durability and performance. Their RoHS-certified finishes make them environmentally friendly choices for diverse applications requiring reliable electrical connections in demanding conditions.