The MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With an operating temperature range from -65 °C to 200 °C, they offer reliable performance in extreme conditions. Available in various shell sizes and insert arrangements, these connectors come in high-strength aluminum shells with options for plating, including cadmium-free finishes. They are environmentally sealed and offer RFI grounding plugs, making them ideal for military and aerospace applications. The connectors, with M39029 rear release crimp contacts, ensure secure and durable connections. The straight plug design with bayonet coupling provides ease of use, while the gold contact plating guarantees excellent conductivity. Meeting MIL-DTL-38999 I specifications, these connectors are essential for demanding environments requiring rugged and dependable electrical connections.