MIL-DTL-38999 Series II connectors are designed for harsh environments, with up to 128 contacts housed within an insert for secure connectivity. These connectors feature various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, offering flexibility in installation. With a wide operating temperature range of -65°C to 200°C, they are suitable for demanding applications. The connectors are available in aluminum shells with different plating options, including cadmium-free finishes for RoHS compliance. Utilizing M39029 rear release crimp contacts, they ensure reliable signal transmission. Meeting military specification MIL-DTL-38999 II, these circular plugs are ideal for aerospace, defense, and industrial use, providing durable and environmentally sealed connectivity.