ISO 6699:1990

Gives the dimensions and tolerances to ensure secure assembly between the stem and the handlebar bend. Applies to bicycles intended for use on public roads, and on which the saddle can be adjusted to provide a saddle height of 635 mm or more. Does not apply to specialized types of bicycle such as trademen's delivery bicycles, tandems, toy bicycles and bicycles designed and equipped for use in sanctioned competitive events.