The MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With environmental sealing and a wide operating temperature range from -65°C to 200°C, they ensure reliable performance in demanding conditions. Available in various shell sizes and insert arrangements, these connectors come in high-strength aluminum shells with options for RoHS-certified finishes. The connector family includes front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, all utilizing M39029 rear release crimp contacts. Perfect for military and industrial applications, these connectors offer durability and conductivity, meeting rigorous standards for environmental resistance.