BS EN 2876:2019 pdf free.Aerospace series-Nuts, hexagon, plain, reduced height, normal across flats, in aluminium alloy, anodized – Classification:450 MPa [at ambient temperature)/ 120 °C.
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 2284, Aerospace series一Sulphuric acid anodizing of aluminium and wrought aluminium alloys EN 2424, Aerospace series – Marking of aerospace products3 EN 9100, Quality Management Systems一Requirements for Aviation, Space and Defence Organizations ISO 5855-2, Aerospace一M] threads – Part 2: Limit dimensions for bolts and nuts  ISO 8788, Aerospace – Nuts, metric – Tolerances of form and position ISO 9139, Aerospace一Nuts, plain or slotted (castellated) – Procurement specification ISO 9609, Aerospace – – Nuts, hexagonal, plain, reduced height, normal across flats, with M] threads, classifications: 450 MPa (at ambient temperature) /120 degrees C, 450 MPa (at ambient temperature) /235 degrees C, 600 MPa (at ambient temperature) /425 degrees C, 900 MPa (at ambient temperature) /235 degrees C, 900 MPa (at ambient temperature) /315 degrees C, 900 MPa (at ambient temperature) /650 degrees C, 1 100 MPa (at ambient temperature) /235 degrees C, 1 100 MPa (at ambient temperature) /730 degrees C and 1 250 MPa (at ambient temperature)/600 degrees C一Dimensions 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: -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一Masses See Figure 1 and Table 1.Dimensions and tolerances are in conformity with ISO 9609, expressed in millimetres and apply after surface treatment. Detail 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) optional within these limiting dimensions diameter M may be tangential to, but shall not intrude on the flats applicable to both faces from either face.BS EN 2876 pdf download.