MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, offering robust environmental sealing and a wide operating temperature range of -65 °C to 200 °C. This harsh environment connector family includes front and rear wall mount, as well as jam nut receptacles with RFI grounding plugs. With 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts in various sizes for reliable connectivity. Constructed with high-strength aluminum shells, these connectors come with plating options such as cadmium and nickel, ensuring durability in demanding applications. RoHS certified finishes are also available. Designed to meet MIL-DTL-38999 I specifications, they are ideal for military, aerospace, and industrial use, providing secure and efficient electrical connections in challenging environments.