MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, 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, along with RFI grounding plugs. Utilizing M39029 rear release crimp contacts, they ensure reliable connectivity in demanding applications. Constructed with high-strength aluminum shells, they come in different plating options like light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, meeting RoHS certification for cadmium-free finishes. Ideal for military and industrial use, these connectors provide secure and durable electrical connections in challenging environments.