MIL-DTL-38999 Series I connectors are engineered for harsh environments, featuring up to 128 contacts housed in an insert for optimal performance. With environmental sealing and a wide operating temperature range from -65 °C to 200 °C, these connectors ensure reliability in demanding conditions. Available in various shell sizes and insert arrangements, they offer versatility for different applications. The connector family includes front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs, all crafted from high-strength aluminum shells. Utilizing M39029 rear release crimp contacts, these connectors guarantee secure connections. Plating options such as gold, electroless nickel, and cadmium finishes cater to specific needs, with RoHS-certified cadmium-free alternatives also available. Perfect for military and industrial use, MIL-DTL-38999 I connectors combine durability, conductivity, and environmental resistance in a single solution.