MIL-DTL-38999 Series II connectors are designed for harsh environmental conditions with up to 128 contacts in an insert. Featuring various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. These connectors, compliant with military specification MIL-DTL-38999 II, are ideal for applications requiring reliable electrical connections in demanding settings. With an operating temperature range from -65 °C to 200 °C, they ensure performance in extreme environments. Available in 9 shell sizes and 52 insert arrangements, they accommodate diverse connectivity needs. The use of M39029 rear release crimp contacts guarantees secure and efficient contact points. Constructed with aluminum shells and offering plating options including cadmium and nickel, these connectors provide durability and corrosion resistance. Suitable for aerospace, defense, and industrial applications, they meet stringent quality standards for rugged performance.