BS EN 2924-2019 pdf free download.Aerospace series – Nuts, hexagon, plain, reduced height, reduced across flats, in heat resisting steel, silver plated, left hand thread – Classification: 600 MPa [at ambient temperature) / 425 °C
This European standard specifies the characteristics of hexagon plain nuts, reduced height, reduced across flats, with left hand thread, in heat resisting steel, silver plated, for aerospace applications.
Clasification: 600 MPa1/425。C2.
2 Normative references
The fllowing 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 siver plating offasteners
EN 9100, Quality Management Systems – Requirements for Aviation, Space and Defence Organizations
ISO 5855-2, Aerospace – M] 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 sotted (asellated) – Procurement specification
TR 3823-002, Aerospace series – – Materials for plain, sotted and slf-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 fllowing addresses:
– ISO Online browsing platform: available at http://www.iso.org/obp
-IEC Electropedia: available at ht://www electropediaorg/
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
IS0 8788.
4.3 Materials
TR 3823-002.
4.4 Surface treatment
EN 2786, thickness:
– on external surfaces: 5 um to 15 um;
-on pitch diameter: 5 μm minimum.
6 Marking
EN 2424, style C, plus M]. .
7 Technical specification
Shall be according to ISo 9139, except for approval of manufacturers: see EN 9100.BS EN 2924 pdf download.