MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, offering environmental sealing and an operating temperature range of -65 °C to 200 °C. This harsh environment connector family includes front and rear wall mount as well as jam nut receptacles, with RFI grounding plugs. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts in various sizes. Constructed with high-strength aluminum shells, these connectors come in different plating options such as light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, with RoHS certified cadmium-free finishes available. Perfect for military and industrial applications, they ensure reliable connectivity in demanding environments.