MIL-DTL-38999 Series II connectors offer robust performance with up to 128 contacts in an insert, designed for harsh environments. Featuring various mounting options like front and rear wall mount, jam nut, and box mount receptacles, they ensure secure connectivity. With a wide operating temperature range of -65 °C to 200 °C, these connectors are ideal for demanding applications. Made of aluminum, they come with multiple plating choices including gold, electroless nickel, and cadmium finishes. Meeting stringent military specifications, these circular connectors guarantee reliability and durability in aerospace, defense, and industrial settings.