MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, with an operating temperature range of -65 °C to 200 °C. Offering front and rear wall mount options, as well as jam nut receptacles with RFI grounding plugs, these connectors are designed for harsh environments. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts in various sizes. Constructed with high strength aluminum shells, they come with plating options like cadmium and electroless nickel. RoHS certified finishes are also available, making them suitable for a variety of applications.