MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert. These environmentally sealed connectors have a wide operating temperature range from -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they offer versatility for different applications. Constructed with high strength aluminum shells, they come with multiple plating options including cadmium-free finishes. The connector family includes front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs, all meeting MIL-DTL-38999 I military specifications. With a bayonet coupling design, these connectors ensure secure and reliable connections in demanding situations.