MIL-DTL-38999 Series I connectors offer high-performance connectivity in harsh environments, featuring up to 128 contacts in an insert. With a wide 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. The connectors, housed in durable aluminum shells with multiple plating options, including cadmium-free finishes, ensure reliable performance. This Series I family includes front and rear wall mount, jam nut receptacles, and RFI grounding plugs, meeting MIL-DTL-38999 I military specifications for quality and durability.