The MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert with environmental sealing. Operating within a wide temperature range from -65°C to 200°C, these connectors offer reliable performance under extreme conditions. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. With options for front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, these connectors provide versatility in installation. Constructed with high-strength aluminum shells and offered in multiple plating options, including RoHS certified finishes, they ensure durability and compliance with industry standards. Suitable for military and industrial applications, the MIL-DTL-38999 Series I connectors guarantee efficient connectivity in demanding settings.