MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, these connectors feature front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs. With a wide operating temperature range of -65 °C to 200 °C, they are suitable for a variety of applications. Available in 9 shell sizes and 52 insert arrangements, these connectors use M39029 rear release crimp contacts for reliable connections. Constructed with high-strength aluminum shells, they come in various plating options, including cadmium-free finishes. These connectors, meeting military specification MIL-DTL-38999 I, ensure durability and performance in demanding conditions.