MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65°C to 200°C. Available in 9 shell sizes and 52 insert arrangements, they include front and rear wall mount, as well as jam nut receptacles and RFI grounding plugs. Utilizing M39029 rear release crimp contacts, they come in various plating options such as light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, with RoHS certified cadmium-free finishes. Constructed with high strength aluminum shells, these connectors ensure durability and reliability in demanding applications.