MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With front wall mount, rear wall mount, and jam nut receptacles, they offer versatility in installation. These connectors, meeting military specification MIL-DTL-38999 I, are environmentally sealed and can operate in temperatures ranging from -65 °C to 200 °C. Utilizing M39029 rear release crimp contacts, they ensure secure connections. Available in 9 shell sizes and 52 insert arrangements, with various plating options including cadmium-free finishes, they provide durability and reliability. The high strength aluminum shells, along with gold-plated removable crimp contacts, guarantee conductivity and longevity. Suitable for applications requiring rugged performance, these connectors are ideal for military and aerospace use.