MIL-DTL-38999 Series I connectors are designed for harsh environments, offering up to 128 contacts in an insert. With environmental sealing and a wide operating temperature range from -65 °C to 200 °C, they ensure reliable performance in demanding conditions. Featuring front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, this connector family provides versatile connectivity options. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. Constructed with high-strength aluminum shells, they come in various plating options, including cadmium-free finishes for RoHS compliance. Suitable for military and industrial applications, these connectors offer durability and conductivity in critical systems.