MIL-DTL-38999 Series I connectors feature up to 128 contacts, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various configurations like front wall mount, rear wall mount, and jam nut receptacles, they offer RFI grounding plugs and utilize M39029 rear release crimp contacts. With 9 shell sizes and 52 insert arrangements, these connectors come in high strength aluminum shells with options for plating, including cadmium-free finishes. Meeting military specification MIL-DTL-38999 I, they provide reliable performance with gold-plated contacts, suitable for applications requiring durability and environmental resistance.