MIL-DTL-38999 Series I connectors feature up to 128 contacts, offering robust environmental sealing and a wide operating temperature range from -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they include front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs. Utilizing M39029 rear release crimp contacts, these connectors ensure secure connections in harsh environments. Constructed with high-strength aluminum shells, they come with a range of plating options, including gold, electroless nickel, and cadmium finishes. With their bayonet coupling and removable crimp contacts, these connectors provide reliable performance, making them ideal for military and industrial applications requiring durability and conductivity.