MIL-DTL-38999 Series I connectors are designed for rugged environments, featuring up to 128 contacts within a sealed insert. With a wide operating temperature range of -65 °C to 200 °C, they offer reliable performance in harsh conditions. Available in various shell sizes and insert arrangements, these connectors come in high-strength aluminum shells with options for different plating finishes, including RoHS-certified cadmium-free coatings. Suitable for military and aerospace applications, they offer versatility with front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs. Utilizing M39029 rear release crimp contacts, these connectors ensure secure connections in demanding situations.