MIL-DTL-38999 Series I connectors are designed for harsh environments, with up to 128 contacts enclosed in an insert for secure connectivity. Featuring front and rear wall mount options, as well as jam nut receptacles, they provide versatile installation possibilities. These connectors, compliant with military specification MIL-DTL-38999 I, offer reliable performance in extreme conditions, with an operating temperature range from -65°C to 200°C. With 52 insert arrangements and M39029 rear release crimp contacts in various sizes, including coax and twinax, they ensure compatibility with a wide range of applications. Constructed with high strength aluminum shells, these connectors come in different plating options, such as electroless nickel and cadmium finishes. Their RoHS-certified cadmium-free variants are also available, meeting environmental regulations. Suitable for demanding environments, the MIL-DTL-38999 I connectors guarantee robust and durable electrical connections for critical operations.