MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert. These connectors are environmentally sealed and can operate in temperatures ranging from -65°C to 200°C. Available in various shell sizes and insert arrangements, they offer versatility for different applications. Constructed with high-strength aluminum shells and offering a choice of plating options, including RoHS-certified finishes, they ensure reliable performance in demanding conditions. The rear wall mount receptacles in this series are ideal for secure installations, with gold-plated removable crimp contacts providing excellent conductivity. With a service rating of II and 500 mating cycles, these connectors are suitable for rugged military and industrial use.