MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in front wall mount, rear wall mount, and jam nut receptacles, these connectors offer RFI grounding plugs and utilize M39029 rear release crimp contacts in various sizes. Constructed with high strength aluminum shells and offered in a range of plating options including cadmium-free finishes, they meet stringent military specifications for reliability. Perfect for applications requiring durable, high-performance connectivity, these connectors are ideal for use in demanding environments where ruggedness and longevity are essential.