MIL-DTL-38999 Series I connectors boast up to 128 contacts, offering robust environmental sealing and a wide operating temperature range from -65 °C to 200 °C. These connectors, part of the rugged MIL-DTL-38999 I family, come in various configurations including front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs. With 9 shell sizes and 52 insert arrangements available, they utilize M39029 rear release crimp contacts in different sizes, ensuring versatile connectivity options. Crafted from high-strength aluminum, these connectors feature a selection of plating options such as electroless nickel, cadmium, and anodized aluminum, with RoHS compliant finishes also offered. Suitable for demanding applications, they provide reliable performance in harsh environments, making them ideal for military and industrial use.