MIL-DTL-38999 Series I connectors feature up to 128 contacts within an environmentally sealed insert, designed for harsh environments. With a wide operating temperature range from -65 °C to 200 °C, these connectors offer reliability in extreme conditions. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8. The connectors come in high-strength aluminum shells with options for plating, including cadmium-free finishes. Offering front wall mount, rear wall mount, and jam nut receptacles with RFI grounding plugs, they meet stringent military specifications for durability and performance. Suitable for wall mounting applications, these connectors ensure secure and efficient electrical connections in critical systems.