MIL-DTL-38999 Series II connectors feature up to 128 contacts housed within an insert, offering durable environmental sealing for harsh conditions with an operating temperature range of -65 °C to 200 °C. Available in various mounting styles including front and rear wall mount, jam nut, and box mount receptacles, they ensure secure connections in diverse applications. With options for straight, RFI grounding, and standard plugs, along with multiple shell sizes and insert arrangements, these connectors provide versatility. Constructed with aluminum shells and offering plating choices such as cadmium-free finishes, they meet stringent military specifications for reliability. The connectors, designed for use in demanding environments, guarantee high performance with gold contact plating, ensuring conductivity and longevity. Compliant with RoHS regulations, they are ideal for applications requiring rugged and dependable electrical connections.