MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, offering environmental sealing and a wide operating temperature range from -65 °C to 200 °C. Available in various shell sizes and insert arrangements, these connectors come with M39029 rear release crimp contacts, suitable for harsh environments. The connector family includes front and rear wall mount, jam nut receptacles, and RFI grounding plugs, all housed in high-strength aluminum shells with options for plating, including cadmium-free finishes. Compliant with military specification MIL-DTL-38999 I, they are designed for durability and reliability in demanding applications.