BS ISO 4206:2016 pdf free.Counterbores with parallel shanks and solid pilots. BS ISO 4206 specifies the dimensions, in millimetres, and the tolerances of counterbores with parallel shanks and solid pilots for general use. 2 Dimensions The dimensions and tolerances are shown in Figure 1 and given in Table 1. NOTE Figure 1 ilustrating this International Standard is diagrammatic only. It is not intended to show details of design. ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO. also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for its further maintenance are described in the lSO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the…