MIL-DTL-38999 Series I connectors offer robust connectivity with up to 128 contacts housed in a sealed insert, designed for demanding environments. Operating reliably between -65 °C and 200 °C, these connectors come in various configurations, including front and rear wall mount, as well as jam nut receptacles, with RFI grounding plugs. Featuring 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8, catering to a wide range of applications. Constructed with high-strength aluminum shells and available in different plating options, such as cadmium and nickel, these connectors ensure durability and performance in diverse settings. Compliant with RoHS regulations, they guarantee both quality and environmental safety in their operation.