MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, they operate reliably in temperatures ranging from -65 °C to 200 °C. Featuring front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, this connector family provides versatile options for various applications. With 9 shell sizes and 52 insert arrangements available, they accommodate different contact configurations, including M39029 rear release crimp contacts. The connectors are housed in durable high-strength aluminum shells with a choice of plating options such as cadmium and nickel finishes. These connectors are RoHS compliant, ensuring they meet environmental standards. Perfect for military, aerospace, and industrial use, MIL-DTL-38999 Series I connectors guarantee reliable performance in demanding conditions.