MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With an operating temperature range of -65 °C to 200 °C, these connectors are suitable for a wide range of applications. Available in various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they offer flexibility in installation. The connectors come in 9 shell sizes and 52 insert arrangements, accommodating different contact sizes. Constructed with aluminum shells and offering plating options such as gold, electroless nickel, and cadmium finishes, they ensure durability and reliable performance. These connectors, meeting military specification MIL-DTL-38999 II, are ideal for demanding environments requiring secure and efficient electrical connections.