This 3/4" plastic thread nut from Allied Precision is a replacement for the nut on Allied's 2002DP Drain Plug De-Icer. It comes straight from the manufacturer, so you can rest assured that it will fit just as perfect as the original. It allows you to mount the de-icer through the drain hole, which keeps the electrical cord out of the water. | Allied Precision 3/4 Thread Plastic Nut 2002DP