MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Offering front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs, these connectors are versatile in their applications. With 9 shell sizes and 52 insert arrangements available, they use M39029 rear release crimp contacts in various sizes, including coax and twinax. Constructed with high strength aluminum shells, they come with a choice of plating options such as cadmium finishes or RoHS certified cadmium-free coatings. Suitable for military and industrial use, the MIL-DTL-38999 I connectors ensure reliable performance in demanding conditions.