MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With front and rear wall mount options, as well as jam nut receptacles and RFI grounding plugs, they offer versatility in connectivity. Operating in temperatures ranging from -65 °C to 200 °C, these connectors are environmentally sealed for reliable performance. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts for secure connections. Made with high-strength aluminum shells, they come in various plating options including cadmium-free finishes. RoHS certified, these connectors are ideal for demanding applications requiring durability and conductivity.