The 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 mounting options including front wall, rear wall, and jam nut receptacles, they offer RFI grounding plugs for reliable connectivity. With 9 shell sizes and 52 insert arrangements, these connectors use M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8. Constructed with high-strength aluminum shells and offered in different plating options such as cadmium and nickel, these connectors ensure durability in demanding applications. RoHS certified finishes are also available, making them environmentally friendly. Perfect for military and industrial use, the MIL-DTL-38999 Series I connectors provide secure and efficient electrical connections in challenging conditions.