MIL-DTL-38999 Series I connectors feature up to 128 contacts, designed for harsh environments with a wide operating temperature range of -65 °C to 200 °C. Available in front wall mount, rear wall mount, and jam nut receptacles, these connectors offer RFI grounding plugs for added versatility. With 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts in various sizes, including coax and twinax options. Constructed with high strength aluminum shells, they come in different plating options such as cadmium and nickel, ensuring durability and reliability. RoHS certified finishes are also available. Perfect for military and industrial applications, these connectors are essential for maintaining secure and efficient electrical connections in demanding environments.