This is the same propshaft that is at the heart of our G-Drive propshaft unit. If the other parts are still good, you can order this alone. Our "each" is one piece, with nut.
This propshaft is standard in our G-Drive unit propshaft assembly. Specially hardened steel, oiled to resist rust until you need it. Threaded 1/4-28, with the flat already ground for the drive dog screw. Comes with a 1/4-28 flanged nut. If your propshaft has two flats, always use the one furthest from the threaded end.