BS 2923:2019 pdf download – 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 2923:2019 pdf download – Aerospace series – Nuts, hexagon, plain, reduced height, reduced across flats, in heat resisting steel, silver plated – Classification: 600 MPa (at ambient temperature) / 425 °C 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 MPa 1) /425 °C 2) . 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 — Marking of aerospace products EN 2786, Aerospace series — Electrolytic silver plating of fasteners EN 9100, Quality Management Systems — Requirements for Aviation, Space and Defence Organizations ISO 5855-2, Aerospace — MJ threads — Part 2: Limit dimensions for bolts and nuts ISO 8788, Aerospace — Nuts, metric — Tolerances of form and position ISO 9139, Aerospace — Nuts, plain or slotted (castellated) — Procurement specification TR 3823-002, Aerospace series — Materials for plain, slotted and self-locking by plastic ring hexagonal nuts 3) 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: — ISO Online browsing platform: available at http://www.iso.org/obp — IEC Electropedia: available at http://www.electropedia.org/ 4 Required characteristics 4.1 Configuration — Dimensions — 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. 4.2 Tolerances of form and position ISO 8788. 4.3 Materials TR 3823-002. 4.4 Surface treatment EN 2786, thickness: — on external surfaces : 5 μm to 15 μm; — on pitch diameter : 5 μm minimum. 6 Marking EN 2424, style C, plus MJ. 7 Technical specification Shall be according to ISO 9139, except for approval of manufacturers: see EN 9100.BS 2923 pdf download.