MIL-DTL-38999 Series II connectors are designed for harsh environments, offering up to 128 contacts in a sealed insert. With an operating temperature range of -65 °C to 200 °C, these connectors are suitable for a wide range of applications. Available in various mounting options such as front wall mount, rear wall mount, and jam nut, they provide versatility in installation. Featuring aluminum shells with plating options including electroless nickel and cadmium finishes, they ensure durability and reliability. Meeting military specification MIL-DTL-38999 II, these circular receptacles are ideal for demanding aerospace, defense, and industrial settings.