The MIL-DTL-38999 Series I connectors offer reliable connectivity in harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range of -65°C to 200°C, they ensure performance in extreme conditions. Available in various shell sizes and insert arrangements, these 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 utilize M39029 rear release crimp contacts for secure connections. The connectors, compliant with military specification MIL-DTL-38999 I, guarantee durability and longevity, making them ideal for demanding applications.