Replacing door handles on hollow doors.

Notwithstanding previous answers,some handle sets come with screws which have a receiving piece on the other end -hard to explain- but basicallythe screws are attached to themselves through the door and notfixed to the door.They are machine screws not wood screws, this type of fixing will never come loose.

The doors may be 'hollow' or 'egg shell' construction but where the latch and handles are, there should be a lock block which is a piece of solid wood (sometimes chipboard) glued to one side of the door to take the ironmongary (handles etc). If the doors have been fitted wrong way round you will always have trouble with the handles as in most cases it is hollow on the hinge side. If your doors have been fitted correctly and the screws are 'baggy' try getting some match sticks and PVA glue and push them into the screw holes. When the glue is dry re-fit your handles and the screws will then bite as you tighten them.

because these door are hollow that is the main problem as the handle screws dont get a very good fixing into the door and once they strip out its almost impossible to refit them, you could try glueing them back on and held in place with a clamp until the glue dries or use super glue

Agree with Bates, they work in a similar way to a bolt screwing into each other and not relying on the door.