MIL-DTL-38999 Series I connectors offer high-performance connectivity in harsh environments with up to 128 contacts sealed for environmental protection. Operating between -65 °C and 200 °C, these connectors are designed for durability. Featuring front wall mount, rear wall mount, and jam nut receptacles, they accommodate various installation needs. With 52 insert arrangements available, including M39029 rear release crimp contacts, these connectors ensure secure and reliable connections. Constructed with high-strength aluminum shells and offering multiple plating options, such as gold and electroless nickel, they provide versatility for different applications. Certified for RoHS compliance, these connectors are ideal for demanding military and industrial environments.