The MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts within an environmentally sealed insert. With an operating temperature range of -65°C to 200°C, they offer reliable performance in extreme conditions. Available in various shell sizes and insert arrangements, these connectors come in high-strength aluminum shells with options for plating including electroless nickel and cadmium finishes. The connectors, including front wall mount, rear wall mount, and jam nut receptacles, are MIL-DTL-38999 I compliant, ensuring quality and durability. Utilizing M39029 rear release crimp contacts, they are suitable for a wide range of applications requiring secure and efficient electrical connections.