MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, designed for operating temperatures ranging from -65 °C to 200 °C. This harsh environment connector family offers front wall mount, rear wall mount, and 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 come with plating options including electroless nickel and cadmium finishes. RoHS certified options are also available, ensuring compliance with environmental regulations. Suitable for military and industrial applications, these connectors provide reliable performance in challenging environments.