MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, these connectors feature front and rear wall mount options, as well as jam nut receptacles and RFI grounding plugs. With a wide operating temperature range from -65 °C to 200 °C, they are suitable for rugged applications. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for reliable connections. The high strength aluminum shells come in various plating options, including cadmium-free finishes, ensuring durability and compliance with RoHS standards. Perfect for military and industrial use, these connectors provide secure and efficient electrical connections in demanding conditions.