MIL-DTL-38999 Series II connectors feature up to 128 contacts within an insert, offering robust connectivity in harsh environments. These environmentally sealed connectors have an operating temperature range of -65 °C to 200 °C, ensuring reliable performance in extreme conditions. Available in various mounting options such as front wall mount, rear wall mount, and jam nut receptacles, they cater to diverse installation needs. With options like RFI grounding and standard plugs, along with a range of shell sizes and insert arrangements, these connectors provide flexibility in design. Constructed with aluminum shells and offering plating choices including electroless nickel and cadmium finishes, they meet stringent military specifications. These connectors, with gold-plated contacts and bayonet coupling, ensure secure and durable electrical connections for mission-critical applications.