MIL-DTL-38999 Series I connectors are designed for harsh environments, offering up to 128 contacts in an insert. These connectors feature front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs. With an operating temperature range of -65°C to 200°C, they are ideal for a wide range of applications. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts in various sizes. The high-strength aluminum shells come in different plating options, including cadmium-free finishes. These connectors are environmentally sealed and RoHS compliant, ensuring reliable performance in demanding conditions. Suitable for military and industrial use, they provide secure and durable connectivity in critical applications.