MIL-DTL-38999 Series I connectors offer rugged reliability with up to 128 contacts in an insert, designed for harsh environments. These environmentally sealed connectors feature 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 various connectivity needs. Utilizing M39029 rear release crimp contacts, these connectors ensure secure and efficient connections. Constructed with high-strength aluminum shells and offered in multiple plating options, including RoHS certified finishes, they guarantee durability and performance in demanding applications. Operating between -65 °C and 200 °C, these connectors are suitable for a wide range of environments, making them ideal for military and industrial use.