The MIL-DTL-38999 Series II connectors offer robust performance in harsh environments with up to 128 contacts housed in a sealed insert, ensuring reliable operation in temperatures ranging from -65 °C to 200 °C. Featuring various mounting options including front and rear wall mount, jam nut, and box mount receptacles, these connectors cater to diverse application needs. Available in aluminum shells with a choice of plating options such as electroless nickel and cadmium finishes, they guarantee durability and corrosion resistance. Compliant with military specification MIL-DTL-38999 II, these circular receptacles are ideal for demanding industrial and aerospace environments, delivering high conductivity and 500 mating cycles. Their removable crimp contacts, gold plating, and socket contact style further enhance their performance, making them a reliable solution for critical connectivity requirements.