MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, offering environmental sealing and a wide operating temperature range of -65 °C to 200 °C. This harsh environment connector family includes front and rear wall mount, as well as jam nut receptacles with RFI grounding plugs. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts in various sizes for versatility. Constructed with high strength aluminum shells, these connectors come with plating options such as cadmium and nickel, including RoHS certified finishes. Ideal for military and aerospace applications, they ensure reliable connectivity in demanding environments.