The MIL-DTL-38999 Series I connectors boast exceptional durability and performance in harsh environments, featuring up to 128 contacts in an insert. With front wall mount, rear wall mount, and jam nut receptacles, they offer versatility in installation. These connectors, compliant with military specification MIL-DTL-38999 I, ensure reliable operation in extreme conditions, with an operating temperature range from -65 °C to 200 °C. Constructed with high-strength aluminum shells and available in various plating options, including RoHS certified finishes, they guarantee longevity and environmental resilience. With M39029 rear release crimp contacts in multiple sizes, these circular connectors are ideal for applications requiring secure and efficient electrical connections.