MIL-DTL-38999 Series II connectors are designed for rugged environments, offering up to 128 contacts in a sealed insert with a wide operating temperature range of -65 °C to 200 °C. Featuring various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they provide versatility in installation. These connectors, compliant with military specification MIL-DTL-38999 II, are constructed with aluminum shells and come in different plating options such as electroless nickel and cadmium finishes. Known for their reliability, they utilize M39029 rear release crimp contacts and offer excellent EMI/RFI shielding. Suitable for harsh conditions, these connectors ensure secure and durable electrical connections in critical applications.