MIL-DTL-38999 Series I connectors offer robust connectivity solutions with up to 128 contacts, meeting stringent environmental standards for sealing and operating temperatures ranging from -65°C to 200°C. Featuring front wall mount, rear wall mount, and jam nut receptacles, this connector family ensures versatile installation options. Compliant with military specification MIL-DTL-38999 I, these circular receptacles are designed for reliability in harsh environments. With a choice of 52 insert arrangements and M39029 rear-release crimp contacts in various sizes, including coax and twinax, they guarantee efficient signal transmission. The high-strength aluminum shells, available in different plating options such as electroless nickel and cadmium finishes, ensure durability. With RoHS-certified cadmium-free variants, these connectors prioritize environmental compliance. Ideal for applications requiring secure and dependable electrical connections, the MIL-DTL-38999 Series I connectors are a trusted choice across industries.