MIL-DTL-38999 Series I connectors are designed for demanding environments, featuring up to 128 contacts in an insert with front and rear wall mount options and jam nut receptacles. These connectors, compliant with military specification MIL-DTL-38999 I, offer reliable performance in a wide temperature range from -65°C to 200°C. Built for durability, they come in high-strength aluminum shells with various plating options, including electroless nickel and cadmium finishes. Utilizing M39029 rear release crimp contacts, these connectors ensure secure and efficient connections. Suitable for applications requiring environmental resilience, they are ideal for use in aerospace, defense, and other rugged industries.