MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts housed in a durable insert. Designed for harsh environments, these connectors are environmentally sealed and can operate in temperatures ranging from -65 °C to 200 °C. Featuring various mounting options including front wall mount, rear wall mount, and jam nut receptacles, they cater to diverse installation needs. With 52 insert arrangements and M39029 rear release crimp contacts in multiple sizes, these connectors ensure reliable connections. Constructed with high-strength aluminum shells and available in different plating options, they meet stringent military specifications for durability and performance. Offering RoHS compliant finishes, they provide a sustainable solution for critical applications in aerospace, defense, and industrial sectors.