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 configurations including front and rear wall mount, jam nut receptacles, and RFI grounding plugs, these connectors offer versatility. Compliant with military specification MIL-DTL-38999 I, they come in 9 shell sizes and 52 insert arrangements, accommodating M39029 rear release crimp contacts. Constructed with high-strength aluminum shells, they offer durable performance. Plating options include light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, with RoHS certified cadmium-free finishes available. Ideal for applications requiring reliable connectivity in demanding environments, these connectors ensure secure and efficient electrical connections.