MIL-DTL-38999 Series II connectors are designed for harsh environments, with up to 128 contacts housed within an environmentally sealed insert. Operating within a wide temperature range of -65 °C to 200 °C, these connectors come in various configurations including front wall mount, rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they feature M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12. Constructed with aluminum shells and offering multiple plating options, such as light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, they cater to diverse needs. Each connector is meticulously crafted to ensure reliability, with RoHS compliant cadmium-free finishes available. Suitable for military, aerospace, and industrial applications, these connectors guarantee high performance and durability in demanding environments.