MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring front wall mount, rear wall mount, and jam nut receptacles with RFI grounding plugs. With up to 128 contacts in an insert, they offer versatility in connectivity. These connectors, compliant with military specification MIL-DTL-38999 I, operate within a wide temperature range of -65 °C to 200 °C. Constructed with high-strength aluminum shells and available in various plating options including cadmium-free finishes, they ensure durability and reliability. Utilizing M39029 rear release crimp contacts, these connectors come in 9 shell sizes and 52 insert arrangements, catering to diverse application needs. Suitable for demanding environments, they provide secure and efficient electrical connections.