551 Stub shaft, for Read Screen-All, Models WM-2000, RD-40, RD-90, RD-150 and the Nordberg CV-40 screeners551 Stub shaft used on the WM 2000, RD 40, RD 90 and RD 150 and the Nordberg model CV 40 screeners. This part was used on the motor side. Please check your parts book to ensure you are ordering the correct part by the part number. If in doubt provide us the model and serial number of your machine and well cross check the part for you. That process could take a few days as this information comes from books and is not in digital form. This will be item