MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, designed for harsh environmental conditions with an operating temperature range of -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they offer front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs. Constructed with high-strength aluminum shells, they come in a range of plating options including light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, with RoHS-certified cadmium-free finishes available. These connectors, compliant with military specification MIL-DTL-38999 I, are ideal for use in demanding applications requiring secure and reliable electrical connections in harsh environments.