MIL-DTL-38999 Series I connectors are designed for harsh environments, offering up to 128 contacts in an insert for robust connectivity. With a wide operating temperature range of -65 °C to 200 °C, they are suitable for various applications. These connectors feature front wall mount, rear wall mount, and jam nut receptacles with RFI grounding plugs, providing versatility in installation. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts for reliable connections. Constructed with high-strength aluminum shells and offering a choice of plating options including cadmium-free finishes, these connectors ensure durability and compliance with RoHS regulations. Suitable for military and industrial use, they guarantee secure and efficient electrical connections in demanding environments.