MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts, housed in environmentally sealed inserts for reliable operation in harsh conditions. These versatile connectors feature various mounting options, including front and rear wall mount, and jam nut receptacles, ensuring flexibility in installation. With a wide range of shell sizes and insert arrangements, they accommodate different contact sizes, such as M39029 rear release crimp contacts. Built to withstand extreme temperatures ranging from -65°C to 200°C, these connectors are ideal for military and aerospace applications. The durable aluminum shells come in multiple plating options, including cadmium-free finishes, meeting stringent environmental standards. With their gold-plated contacts and bayonet coupling design, they ensure secure and high-quality connections, suitable for demanding environments.