BS ISO 6699:2016 pdf free.Cycles一Handlebar centre and stem dimensions. BS ISO 6699  specifies the dimensions and tolerances to ensure secure assembly between the stem and the handlebar centre of a bicycle. This International Standard is applicable for 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. This International Standard is not applicable for specialized types of bicycle, such as tradesmen’s delivery bicycles, tandems, toy bicycles and bicycles designed and equipped for use in sanctioned competitive events. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 4210-2:2015, Cycles一Safety requirements for bicycles一Part 2: Requirements for city and trekking, young adult, mountain and racing bicycles 3 Dimensions 3.1 External diameter of the handlebar The external diameter of the handlebar, D, at the stem interface shall be according to Table 1 (see Figure 1). 3.2 Internal diameter of the stem clamp The internal diameter of the stem clamp, d, shall be…