MIL-DTL-38999 Series II connectors offer high-performance connectivity in harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range from -65 °C to 200 °C, these connectors are designed for reliable performance in extreme conditions. Available in various mounting styles such as front wall, rear wall, jam nut, and box mount receptacles, they provide versatility for different applications. The plugs, including straight, RFI grounding, and standard options with a 90-degree cable clamp, ensure secure connections. Constructed with aluminum shells and offering a range of plating options, including cadmium-free finishes, these connectors meet stringent military specifications for durability and performance. Suitable for use in demanding environments, they guarantee reliable signal transmission with their gold-plated contacts and EMI/RFI shielding. With a service rating of II and a service class of E, they are ideal for applications requiring environment-resistant box and through bulkhead mounting receptacles.