BS ISO 8788:2020 pdf free.Aerospace一Nuts, metric – Tolerances of form and position.
BS ISO 8788 1 Scope This document defines the tolerances of form and position of metric nuts meant for aerospace construction. These tolerances comply with ISO 1101, ISO 2692 and ISO 5459.2 Normative references There are no normative references in this document.3 Terms and definitions No terms and definitions are listed in this document. ISO and IEC maintain terminological databases for use in standardization at the following addresses: 一ISO Online browsing platform: available at https://www.iso.org/obp 一IEC Electropedia: available at http://www.electropedia.org/ 4 Types of nuts, illustration of tolerances of form and position, values See Table 1 for the tolerances of form and position to be applied in relation to the type of nut, Table 2 to Table 11 for the illustration of tolerances of form and position for different types of nut. See Tables 12 and Table 13 for the values of the tolerances. In the “illustration” column, only one type of nut has been shown as an example, but the corresponding tolerance applies to all types of nut specified in the third column.See Table 1 for the tolerances of form and position to be applied in relation to the type of nut, Table 2 to Table 11 for the illustration of tolerances of form and position for different types of nut. See Tables 12 and Table 13 for the values of the tolerances. In the “illustration” column, only one type of nut has been shown as an example, but the corresponding tolerance applies to all types of nut specified in the third
column.Applicable over a diameter equal to K, see Table 13. For floating anchor nuts, this requirement applies to the element only over a diameter equal to the width of this element.
For fixed anchor nuts, datum A is the thread pitch diameter; for floating anchor nuts, datum A is the hole diameter in the cage.BS ISO 8788 pdf download.