Gives dimensions and tolerances and the code for screw thread. Screws with shallow thread shall be as given in figures 1 and 2 and tables 1 and 2. Screws with deep thread shall be as given in figures 3 and 4 and tables 3 and 4. Marking and packaging shall be in accordance with ISO 6018. An example for combined screw is given in annex A. An interrelationship of International Standards dealing with bone screws, bone plates and relevant tools is given in annex B. Bibliography is given in annex C.