BS EN 2876-2019 pdf free download.Aerospace series – Nuts, hexagon, plain, reduced height, normal across flats, in aluminium alloy, anodized – Classification: 450 MPa (at ambient temperature)/120 °C
This European standard specifies the characteristics of hexagonal plain nuts, reduced height, normal across flats, in aluminium alloy, anodized, for aerospace applications.
Classification: 450 MPa 1) /120 °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 2284, Aerospace series — Sulphuric acid anodizing of aluminium and wrought aluminium alloys
EN 2424, Aerospace series — Marking of aerospace products 3
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
ISO 9609, Aerospace — Nuts, hexagonal, plain, reduced height, normal across flats, with MJ 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 — Dimensions
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 in conformity with ISO 9609, expressed in millimetres and apply after surface treatment.
Detail 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 2284.
Remove sharp edges 0,1 to 0,4
5 Designation
EXAMPLE
NOTE If necessary, the code I9005 shall be placed between the description block and the identity block.
6 Marking
See Table 3.
7 Technical specification
Shall be done in according to ISO 9139, except for approval of manufacturers: see EN 9100.BS EN 2876 pdf download.