MIL-DTL-38999 Series II connectors feature up to 128 contacts in a sealed insert for reliable performance in harsh environments. With an operating range from -65 °C to 200 °C, these connectors offer versatility in various applications. Available in a range of mounting options including front and rear wall mount, jam nut, and box mount receptacles, they provide flexibility in installation. The connectors come in 9 shell sizes and 52 insert arrangements, accommodating different contact sizes for optimal connectivity. Constructed with aluminum shells and offering plating options such as gold, electroless nickel, and cadmium-free finishes, they ensure durability and compliance with RoHS regulations. Suitable for military and industrial use, these connectors guarantee secure and efficient electrical connections in demanding conditions.