The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert that is environmentally sealed. With an operating temperature range of -65°C to 200°C, these connectors offer reliable performance in a wide range of conditions. Available in various mounting styles, including front and rear wall mount, jam nut, and box mount receptacles, they provide versatility for different applications. Constructed with aluminum shells and offering multiple plating options, including cadmium-free finishes, these connectors ensure durability and compatibility with RoHS regulations. Suitable for military and industrial use, they meet stringent standards for performance and reliability.