MIL-DTL-38999 Series I connectors feature up to 128 contacts within an 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 front wall mount, rear wall mount, and jam nut receptacles with RFI grounding plugs. Constructed with high-strength aluminum shells, these connectors come in a range of plating options, including cadmium-free finishes, such as electroless nickel. Ideal for military and aerospace applications, they ensure reliable connectivity with gold-plated, removable crimp contacts. Meeting stringent MIL-DTL-38999 I specifications, these circular receptacles guarantee durability and performance in demanding conditions.