MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts and environmental sealing. With an operating temperature range of -65 °C to 200 °C, they offer reliability in extreme conditions. Available in various mounting styles such as front and rear wall mount, jam nut, and box mount receptacles, these connectors accommodate diverse applications. The connectors, compliant with military specification MIL-DTL-38999 II, come in aluminum shells with multiple plating options, including gold for optimum conductivity. Their versatility is enhanced by 52 insert arrangements, utilizing M39029 rear release crimp contacts. Suitable for demanding environments, these connectors ensure secure and durable electrical connections.