If your lock/latch does not have these holes then you will likely need to change them for ones that do. There are a variety of sticky back, hook type fixings available for hanging T-towels and light clothing onto the back of doors.

Plasplugs DR308 DR 308 Hollow Door Fixings (10) PLADR308

In this situation the timber for the fixing screws will be very thin giving a poor fixing for the screws to bite.

Using standard screws are ok to a point but if any weight or pulling force is applied to them, in most cases they rip straight out, especially when fixing handles to hollow doors due to the forces applied to them when opening and closing the door itself. First we are going to use the purpose made hollow door fixings to fix a coat hanger rail to a hollow door and then we are going to secure a batten to the door using construction adhesive.

Specialist Fixings - Plasplugs Specialist Fixings - Plasplugs

Whilst many bolt through fixing sets on the market are flat countersunk screws which are the wrong size and finish, Bernards Door Furniture Direct produce a range of fixings in different finishes to match your handles. I really like some of your ideas and will give them a go (and then will probably have to get a new door) Ha ha ha! I put in some hollow door plugs which I thought might help the screws grip better but that has made it worse and the hinge is now coming away from the door. Once level, use a screw or other thin pointed object to mark through the fixing holes on the hanging rail to show where you need to drill your fixing holes.If there aren’t any holes already in the hanging rail you will need to measure and mark centre points and then drill them out. You should drill through the outer(existing) and your new piece and countersink and insert screw right through to the top insert piece. They also come supplied with correct sized drill bit to drill the correct size hole in the door to push the fixing in to so the surface of the plug is level with the surface of the door.