The MIL-DTL-38999 Series II connectors are robustly designed for harsh environments, featuring up to 128 contacts housed in an insert with environmental sealing. Operating efficiently in extreme temperatures ranging from -65 °C to 200 °C, these connectors offer reliable performance in demanding conditions. Available in various mounting styles such as front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse installation requirements. With options for straight, RFI grounding, and standard plugs, including a 90-degree cable clamp, versatility is ensured. The connectors, compliant with military specification MIL-DTL-38999 II, boast sturdy aluminum shells and a range of plating choices for corrosion resistance, including cadmium-free finishes for RoHS compliance. Suitable for critical applications, these connectors guarantee secure and durable electrical connections, with M39029 rear release crimp contacts ensuring precision and reliability.