The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range of -65 °C to 200 °C, these connectors offer reliable performance in extreme conditions. Available in various mounting options including front wall, rear wall, jam nut, and box mount receptacles, they meet stringent military specifications for durability. The connectors come in aluminum shells with a choice of plating options, ensuring corrosion resistance. Utilizing M39029 rear release crimp contacts, they provide secure connections in sizes 22D, 22M, 22, 20, 16, and 12. With RoHS compliant finishes available, these connectors are ideal for applications requiring rugged and reliable connectivity.