MIL-DTL-38999 Series II connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Offering various mounting options like front wall, rear wall, and jam nut receptacles, as well as straight and 90-degree cable clamp plugs, they cater to diverse connectivity needs. Compliant with military specification MIL-DTL-38999 II, these circular connectors ensure reliable performance, with options for gold-plated contacts and RoHS-certified finishes. Available in 9 shell sizes and 52 insert arrangements, they accommodate M39029 rear release crimp contacts, making them ideal for aerospace, defense, and industrial applications requiring rugged and durable interconnect solutions.