MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65°C to 200°C. This connector family includes front wall mount, rear wall mount, and jam nut receptacles with RFI grounding plugs, offering versatility in installation. With 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for reliable connectivity. Constructed with high-strength aluminum shells, these connectors come in various plating options such as cadmium and nickel, meeting different application needs. RoHS-certified finishes are available for environmental compliance. Perfect for military and industrial use, MIL-DTL-38999 I connectors ensure durability and performance in demanding conditions.