The MIL-DTL-38999 Series I connectors are designed for demanding environments, offering up to 128 contacts in a sealed insert. With an operating temperature range from -65 °C to 200 °C, they provide reliable performance in extreme conditions. Featuring various mounting options such as front wall, rear wall, and jam nut receptacles, along with RFI grounding plugs, these connectors cater to diverse connectivity needs. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. Constructed with high-strength aluminum shells and offering a range of plating options, including cadmium-free finishes, these connectors ensure durability and compliance. Suitable for military and industrial applications, the MIL-DTL-38999 Series I connectors guarantee reliable and efficient electrical connections in harsh environments.