MIL-DTL-38999 Series I connectors feature up to 128 contacts sealed for environmental protection, with a wide operating temperature range from -65 °C to 200 °C. Offering versatility, they include front and rear wall mount options, jam nut receptacles, and RFI grounding plugs. Available in 9 shell sizes and 52 insert arrangements, these connectors use M39029 rear release crimp contacts in various sizes. Constructed with high-strength aluminum shells, they come with plating options such as cadmium and nickel, meeting diverse application needs. With RoHS-certified alternatives, these connectors ensure reliable performance in demanding environments.