MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert and offering environmental sealing. With an operating temperature range of -65 °C to 200 °C, these connectors are suitable for a wide range of applications. Available in various mounting styles, including front and rear wall mount, jam nut, and box mount receptacles, they provide flexibility in installation. The plugs come in straight, RFI grounding, and standard configurations, with a 90-degree cable clamp option. Constructed with aluminum shells and offering multiple plating options, including cadmium-free finishes, they meet stringent military specifications for reliability and durability. With RoHS compliance and a service rating of II, these connectors ensure high performance in demanding conditions.