The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert that offers environmental sealing. With an operating temperature range of -65°C to 200°C, these connectors are suitable for a wide range of applications. Available in various mount types including front and rear wall mount, jam nut, and box mount receptacles, they offer flexibility in installation. The connectors come in aluminum shells with multiple plating options such as cadmium and nickel, catering to different environmental requirements. Utilizing M39029 rear release crimp contacts, they ensure secure and reliable connections. Compliant with military specification MIL-DTL-38999 II, these connectors are ideal for rugged military and aerospace applications.