The MIL-DTL-38999 Series I connectors, designed for harsh environments, feature up to 128 contacts in an insert with front wall mount, rear wall mount, and jam nut receptacles. Operating between -65 °C and 200 °C, these connectors are environmentally sealed and offer RFI grounding plugs. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts in various sizes. Constructed with high-strength aluminum shells, they come with plating options such as cadmium finishes and RoHS certified coatings. Perfect for military and industrial applications, these connectors ensure reliable performance in demanding conditions.