The MIL-DTL-38999 Series I connectors are designed for harsh environments, offering up to 128 contacts in an insert. These connectors are environmentally sealed and can operate in temperatures ranging from -65 °C to 200 °C. Featuring front wall mount, rear wall mount, and jam nut receptacles with RFI grounding plugs, they provide versatility in installation. Available in 9 shell sizes and 52 insert arrangements, these connectors use M39029 rear release crimp contacts for secure connections. Constructed with high-strength aluminum shells and offered in various plating options, including RoHS certified finishes, they ensure durability and reliability. Perfect for military and industrial applications, these connectors guarantee optimal performance in demanding conditions.