The MS27468 type jam nut receptacle features a single-hole mounting design with an integrated O-ring, making it the best option to maintain the environmental integrity of your enclosure. Rear accessory threads accept protective backshells. A cover is recommended to protect contacts when the receptacle is not is use. It is fully compatible with all D38999 / MIL-DTL-38999 / MIL-C-38999 connectors.