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 shell sizes and insert arrangements, they offer front wall mount, rear wall mount, and jam nut receptacles with RFI grounding plugs. Utilizing M39029 rear release crimp contacts, these connectors ensure secure connections. Constructed with high-strength aluminum shells, they come in different plating options such as cadmium and nickel for optimal performance. RoHS certified options are also available, making them suitable for diverse applications requiring reliability and durability.