MIL-DTL-38999 Series I connectors are designed for rugged environments, featuring up to 128 contacts in an insert with environmental sealing. Operating in temperatures ranging from -65 °C to 200 °C, they offer reliability in harsh conditions. Available in various shell sizes and insert arrangements, these connectors come in high-strength aluminum shells with options for plating, including RoHS-certified finishes. With front wall mount, rear wall mount, and jam nut receptacles, they cater to diverse mounting needs. Utilizing M39029 rear release crimp contacts, they ensure secure connections. Ideal for military and industrial applications, these connectors provide conductivity and ingress protection, making them suitable for demanding environments.