MIL-DTL-38999 Series II connectors are designed for harsh environments, offering up to 128 contacts in an insert. These connectors are environmentally sealed with an operating temperature range of -65 °C to 200 °C. Featuring various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they provide versatility for different applications. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12. Constructed with aluminum shells and offering multiple plating options including cadmium-free finishes, these connectors ensure durability. The straight plugs come with RFI grounding and standard options, with a 90-degree cable clamp. Suitable for military and industrial use, these connectors meet MIL-DTL-38999 II specifications, providing reliable connectivity in demanding conditions.