BS EN 2923:2019 pdf free.Aerospace series – Nuts, hexagon, plain,reduced height, reduced across flats, in heat resisting steel, silver plated- Classification:600 MPa [at ambient temperature) / 425 °C.
BS EN 2923 1 Scope This European standard specifies the characteristics of hexagon plain nuts, reduced height, reduced across flats, in heat resisting steel, silver plated, for aerospace applications. Classification: 600 MPa1)/425 °C2). 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.EN 2424, Aerospace series一Marking of aerospace products EN 2786, Aerospace series一Electrolytic silver plating of fasteners EN 9100, Quality Management Systems一Requirements for Aviation, Space and Defence Organizations ISO 5855-2, Aerospace一M] threads一Part 2: Limit dimensions for bolts and nuts ISO 8788, Aerospace一Nuts, metric一Tolerances of form and position ISO 9139, Aerospace一Nuts, plain or slotted (castellated)一Procurement specification TR 3823-002， Aerospace series 一Materials for plain, slotted and self-locking by plastic ring hexagonal nuts3)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 http://www.iso.org/obp 一IEC Electropedia: available at http://www.electropedia.org/ 4 Required characteristics 4.1 Configuration – Dimensions 一Masses See Figure 1 and Table 1. Dimensions and tolerances are expressed in millimetres and apply after surface treatment. Details of form not stated are at the manufacturer’s option.These values in micrometres apply before surface treatment. They do not apply to threads the surface texture of which will be as achieved by usual manufacturing methods.all forms of entry (chamfer or radius) permissible within the limiting dimensions applicable to both faces from either face.BS EN 2923 pdf download.