MIL-DTL-38999 Series I connectors offer rugged performance with up to 128 contacts in an insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Featuring various mounting options, including front wall, rear wall, and jam nut receptacles, these connectors ensure secure connections. Utilizing M39029 rear release crimp contacts, they come in 9 shell sizes and 52 insert arrangements, accommodating diverse applications. Crafted with high-strength aluminum shells and available in different plating options such as cadmium and electroless nickel, they guarantee reliability in demanding conditions. RoHS compliant finishes are also available, meeting environmental standards. Suitable for military and industrial use, these connectors provide exceptional performance and durability for critical operations.