The MIL-DTL-38999 Series II connectors offer reliable connectivity in harsh environments, with up to 128 contacts sealed for protection. Designed for rugged applications, these connectors feature various mounting options including front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts for secure connections. Constructed with aluminum shells and offering multiple plating options, including RoHS certified finishes, these connectors ensure durability and performance. With an operating temperature range of -65 °C to 200 °C, they are suitable for a wide range of applications in military, aerospace, and industrial settings.