Robust Toilet Seat Hinge Bolt and Nut Set

I needed to repair a toilet seat and didn't like the hinge bolt offerings here on MakerWorld so I decided to model my own.  It is based on the broken one I have but optimized for 3d printing.It is designed with flat faces on the bolt to allow it to be printed horizontally in PETG for enhanced strength.  The bolt head slides on the shaft and snugly snaps onto the top of the bolt. There is a flat blade screwdriver slot in the top of the bolt as well as a 15mm hex head for easy installatio