These MIL-DTL-38999 Series I connectors feature up to 128 contacts enclosed in an environmentally sealed insert with an impressive operating temperature range of -65 °C to 200 °C. Designed for harsh environments, they come in various mounting options including front and rear wall mount and jam nut receptacles, along with RFI grounding plugs. With 9 shell sizes and 52 insert arrangements available, they utilize M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8, accommodating a wide range of applications. The high strength aluminum shells come with plating options like light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, offering both durability and versatility. Additionally, the connectors are RoHS compliant, ensuring environmentally conscious manufacturing practices. Suitable for military and industrial use, these connectors guarantee reliable performance in demanding conditions.