MIL-DTL-38999 Series I connectors feature up to 128 contacts within an environmentally sealed insert. Designed for harsh environments, they offer a wide operating temperature range from -65 °C to 200 °C. This connector family includes front and rear wall mount as well as jam nut receptacles, along with RFI grounding plugs. With 9 shell sizes and 52 insert arrangements available, they utilize M39029 rear release crimp contacts in various sizes. Constructed with high-strength aluminum shells, these connectors come in multiple plating options, including RoHS certified finishes. Perfect for military applications, they ensure reliable performance with a mating life of 500 cycles.