MIL-DTL-38999 Series I connectors, featuring up to 128 contacts in an insert, are designed for harsh environments with an operating temperature range of -65°C to 200°C. The 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, these connectors utilize M39029 rear release crimp contacts in various sizes. Constructed with high strength aluminum shells, they offer plating options such as light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, with RoHS certified cadmium-free finishes. Perfect for military and aerospace applications, these connectors ensure reliable performance with their durable design and environmental sealing.