MIL-DTL-38999 Series I connectors offer high-performance connectivity in harsh environments, featuring up to 128 contacts in a sealed insert. With an operating temperature range of -65°C to 200°C, they ensure reliable functionality in extreme conditions. Available in various mounting options, including front wall, rear wall, and jam nut receptacles, these connectors meet stringent military specifications. Utilizing M39029 rear release crimp contacts, they provide secure connections in sizes 22D, 22M, 22, 20, 16, and 8. Constructed with durable aluminum shells and offered with a choice of plating finishes, such as electroless nickel and cadmium, they guarantee long-lasting performance. RoHS compliant options are also available, making them suitable for a wide range of applications requiring rugged and reliable circular connectors.