MIL-DTL-38999 Series I connectors are designed for harsh environments, boasting up to 128 contacts sealed within their inserts. With an operating temperature range of -65 °C to 200 °C, these connectors are suitable for a wide variety of applications. Featuring front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, they offer versatility in installation. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts in various sizes, including coax and twinax options. Constructed with high-strength aluminum shells and offering multiple plating choices such as cadmium and nickel, they ensure reliable performance. RoHS compliant finishes are also available, catering to environmental regulations. Suitable for military and industrial use, MIL-DTL-38999 Series I connectors provide durability and conductivity in demanding conditions.