BS EN 4161:2019 pdf free.Aerospace series – Screws, pan head, offset cruciform recess, coarse tolerance normal shank, long thread, in alloy steel,cadmium plated一Classification: 1 100 PMa [at ambient temperature)/235 °C.
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 2133, Aerospace series 一Cadmium plating of steels with specified tensile strength S 1450 MPa, copper, copper alloys and nickel alloys EN 2137, Aerospace series一Steel FE-PL75- 1 100 MPa≤Rm S1250 MPa- Bars- De S 100 mm EN 2424, Aerospace series – – Marking of aerospace products
EN 2442, Steel FE-PL711- 1 100 MPa≤Rm≤1300 MPa一Bars and wires一De≤25 mm ISO 3353-1, Aerospace – Lead and runout threads – Part 1: Rolled external threads ISO 5855-2, Aerospace一M] threads一Part 2: Limit dimensions for bolts and nuts ISO 7689, Aerospace- Bolts, with M] threads, made of alloy steel, strength class 1 100 MPa一 Procurement specification ISO 7913, Aerospace – Bolts and screws, metric一Tolerances of form and position
ISO 14275, Aerospace一Drives, internal, offset cruciform, ribbed一Metric series 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 一Dimensions一Masses Shall be in accordance with Figure 1 and Table 1. Dimensions and tolerances are expressed in millimetres and apply after surface treatment.
4.2 Tolerances of form and position Shall be in accordance with ISO 7913. 4.3 Materials Shall be in accordance with EN 2137 and EN 2442
or ASD-STAN/TR 3775 (alloy steel, classification 1 100 MPa). 4.4 Surface treatment According to EN 2133, 8 μm to 14 um, on all surfaces which can be contacted by a 20 mm diameter ball. On all other surfaces, a continuous deposit shall be present, but no value is specified. Black colour option: code B.
7 Technical specification Shall be according to ISO 7689, except for the following clauses: a) Approval of manufacturers The manufacturer’s operations shall be an approved production organization for aerospace products and shall demonstrate that it has implemented and is able to maintain a quality system (e. g. according to EN 9100 or an equivalent aerospace accepted and established quality management system). b) Qualification of screws The qualification procedure for aerospace standard products [e. g. according to EN 9133 or an equivalent aerospace accepted and established qualification procedure) shall be used and documented according to the specified tests if not otherwise agreed between customer and supplier. BS EN 4161 pdf download.