MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, designed for harsh environments with operating temperatures ranging from -65 °C to 200 °C. Available in various mounting options such as front wall, rear wall, and jam nut receptacles, these connectors offer RFI grounding plugs and utilize M39029 rear release crimp contacts. With 9 shell sizes and 52 insert arrangements, they ensure versatile connectivity. Constructed with high-strength aluminum shells and offered in plating options like electroless nickel and cadmium finishes, they guarantee reliable performance. RoHS compliant variants are available, making them suitable for diverse applications requiring durable and secure electrical connections.