MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, offering environmental sealing and a wide operating temperature range of -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they include front wall mount, rear wall mount, and jam nut receptacles with RFI grounding options. Utilizing M39029 rear release crimp contacts in multiple sizes, these connectors come in high-strength aluminum shells with plating options like cadmium and nickel. Designed for harsh environments, they ensure reliable performance with RoHS-certified finishes, making them ideal for military and industrial applications.