MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they offer versatility for different applications. These connectors come in high-strength aluminum shells with options for plating, including cadmium-free finishes. With front and rear wall mount receptacles, jam nut receptacles, and RFI grounding plugs, they ensure reliable connectivity. Utilizing M39029 rear release crimp contacts, these connectors are suitable for diverse industrial and military use cases.