MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert with 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, along with RFI grounding plugs. 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, these connectors offer multiple plating options such as cadmium and nickel finishes. RoHS certified cadmium-free options are also available, ensuring compliance with environmental regulations. Suitable for military and industrial applications, these connectors provide reliable performance in demanding environments.