The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert for secure electrical connections. With front wall mount, rear wall mount, jam nut, rear box mount, and front box mount receptacles, they offer versatile installation options. These connectors, meeting military specification MIL-DTL-38999 II, are constructed with durable aluminum shells and come in various plating options including electroless nickel and cadmium finishes. Operating efficiently in temperatures ranging from -65°C to 200°C, they are suitable for a wide range of applications. With RoHS compliant cadmium-free finishes available, these connectors ensure both performance and environmental responsibility.