MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts and environmental sealing. Operating within a wide temperature range from -65 °C to 200 °C, these connectors offer versatility in extreme conditions. Available in various mounting styles including front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse applications. With options for straight, RFI grounding, and standard plugs, along with multiple shell sizes and insert arrangements, these connectors provide flexibility in design. Constructed with durable aluminum shells and offering plating choices such as cadmium and nickel, they ensure reliable performance. Suitable for military and industrial use, these connectors meet stringent quality standards, making them a dependable choice for demanding environments.