MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, offering reliable connectivity in harsh environments. With an operating temperature range of -65 °C to 200 °C, these connectors are ideal for demanding applications. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. Constructed with high-strength aluminum shells and offered in different plating options, including cadmium-free finishes, they meet stringent military specifications. The connector family includes front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, ensuring versatile installation options. Suitable for box mounting, these connectors feature bayonet coupling for easy mating. With their environment-resistant design, they provide reliable performance in challenging conditions.