MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts within an insert. These circular receptacles, with a maximum operating temperature of 200 °C and a minimum of -65 °C, offer reliable performance in extreme conditions. Available in various mount types including front and rear wall mount, jam nut, and box mount, they provide flexibility in installation. The connectors, made of aluminum, are environmentally sealed and comply with military specifications. With options for gold contact plating and electroless nickel finish coating, they ensure high conductivity and durability. Perfect for applications requiring rugged connectivity, these connectors guarantee 500 mating cycles and meet RoHS compliance.