MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, they feature front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs. With a wide temperature range of -65 °C to 200 °C, these connectors ensure reliable operation in extreme conditions. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts in various sizes, including coax and twinax. Constructed with high-strength aluminum shells, they come in multiple plating options such as cadmium and nickel, meeting diverse application needs. RoHS compliant versions are also offered, providing environmentally friendly solutions for demanding connectivity requirements. Perfect for military and industrial applications, these connectors guarantee durability and performance in challenging settings.