MIL-DTL-38999 Series II connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. With options for straight, RFI grounding, and standard plugs, along with 52 insert arrangements, these connectors provide flexibility for different applications. Made with aluminum shells and offering a range of plating options, including RoHS certified finishes, they ensure reliable performance in demanding conditions. Suitable for military and industrial use, these connectors meet stringent quality standards for durability and conductivity.