Andersen 4-3/4" Spindle for hinged patio doors.  It is the middle length one in the picture.   The other lengths are in separate listings. Fast and free shipping.

Andersen Hinged Door Handle Spindle 4-3/4" Long Works with 400 Series Frenchwood Hinged (In-Swing and Out-swing) Patio Doors manufactured from 1988 to Present. This spindle is inserted through the lock mechanism and attaches to the interior and exterior handles. This is NOT a standard spindle and is used with one 1" handle extender.

I am selling many parts from parts bins of a closed Andersen dealer.  Some are in packages.  Most are not.  Some are older. As far as I know, they are all genuine Andersen, but I have no way of telling,  Please rely on the pictures