MIL-DTL-38999 Series I connectors offer robust performance in harsh environments, featuring up to 128 contacts securely housed in sealed inserts. With a wide operating temperature range of -65 °C to 200 °C, these connectors ensure reliability in extreme conditions. Available in various mounting options including front and rear wall mount and jam nut receptacles, they meet diverse application needs. Compliant with military specification MIL-DTL-38999 I, these circular connectors boast durability with high-strength aluminum shells. Offering versatility, they come in 9 shell sizes and 52 insert arrangements, accommodating M39029 rear release crimp contacts in multiple sizes. Plating options such as gold, electroless nickel, and cadmium finishes provide enhanced performance and longevity. Designed for rugged environments, these connectors guarantee conductivity and ingress protection, making them ideal for demanding military and industrial applications.