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 configurations including front and rear wall mount, jam nut receptacles, and RFI grounding plugs, they offer versatility in applications. With 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts, ensuring secure connections. Constructed with high-strength aluminum shells, they come with plating options such as light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, meeting diverse needs. RoHS certified finishes are also available. Suitable for military and industrial use, these connectors provide reliable performance in demanding conditions.