MIL-DTL-38999 Series II connectors are designed for rugged environments, offering up to 128 contacts in an insert with environmental sealing. Operating between -65 °C and 200 °C, these connectors come in various mounting options like front and rear wall mount, jam nut, and box mount receptacles. Available in aluminum shells with plating options such as electroless nickel and iridescent yellow cadmium, they ensure reliable performance. Featuring removable crimp contacts, these connectors are suited for military and industrial applications, with a service rating of I and a mating life of 500 cycles. With EMI/RFI shielding, they provide secure connectivity in demanding settings.