MIL-DTL-38999 Series I connectors offer robust connectivity with up to 128 contacts, featuring environmental sealing for reliable performance in harsh conditions. Designed for a wide temperature range from -65 °C to 200 °C, these connectors come in various configurations including front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs. With 9 shell sizes and 52 insert arrangements available, they accommodate diverse connectivity needs. Utilizing M39029 rear release crimp contacts in different sizes, including coax and twinax, these connectors ensure secure and efficient connections. Constructed with high strength aluminum shells and offering plating options such as electroless nickel and cadmium finishes, they meet stringent military specifications. Perfect for applications requiring durability and performance, MIL-DTL-38999 Series I connectors are the ideal choice for mission-critical environments.