MIL-DTL-38999 Series I connectors feature up to 128 contacts, designed for harsh environments with an operating temperature range of -65°C to 200°C. Available in various shell sizes and insert arrangements, these connectors offer front wall mount, rear wall mount, and jam nut receptacles with RFI grounding plugs. Constructed with high-strength aluminum shells and utilizing M39029 rear release crimp contacts, they ensure reliable performance. Plating options include light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, with RoHS-certified cadmium-free finishes. Ideal for military and aerospace applications, these connectors are specified under MIL-DTL-38999 I, providing durability and conductivity in demanding environments.