MIL-DTL-38999 Series I connectors feature environmentally sealed inserts with up to 128 contacts, designed for rugged applications with an operating temperature range of -65 °C to 200 °C. This connector family includes front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, offering versatility in deployment. With 9 shell sizes and 52 insert arrangements available, they utilize M39029 rear release crimp contacts for reliable connections. Constructed with high strength aluminum shells, these connectors come in various plating options such as electroless nickel and cadmium finishes, meeting stringent military specifications for performance and durability. RoHS compliant options are also offered, ensuring compatibility with modern environmental standards. Suitable for demanding environments, the MIL-DTL-38999 Series I connectors are ideal for aerospace, defense, and industrial applications.