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 mounting styles including front and rear wall mount, as well as jam nut receptacles, these connectors offer versatility in connectivity solutions. The family includes RFI grounding plugs and utilizes M39029 rear release crimp contacts in multiple sizes. Constructed with high strength aluminum shells, they come in a range of plating options such as cadmium and nickel, with RoHS certified finishes available. Meeting military specifications, these connectors are reliable for applications requiring durability and performance in demanding conditions.