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 and rear wall mount options, as well as jam nut receptacles and RFI grounding plugs. With a wide operating temperature range of -65 °C to 200 °C, these connectors provide reliable performance in demanding conditions. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts for secure connections. Constructed with high-strength aluminum shells, these connectors come with various plating options, including cadmium-free finishes for RoHS compliance. Suitable for military and industrial applications, they ensure connectivity in critical settings.