EN 3768:2012 Aerospace series - Nuts, anchor, self-locking, one lug, fixed, reduced series, with counterbore, in heat resisting steel, MoS2 lubricated - Classification: 1100 MPa (at ambient temperature)/315 °C
This European Standard specifies the characteristics of one lug, reduced series, counterbored fixed anchor nuts, with a self-locking feature achieved by forming the upper portion out-of-round, in heat resisting steel, MoS2 lubricated. Classification: 1100 MPa1)/315 ℃2)
EN 3768:2012 Referenced Document
EN 2398 Aerospace series - Heat resisting steel FE-PA2601 (X6NiCrTiMoV26-15) - Rm greater than or equal to 900 MPa - Bars for machined bolts - D less than or equal to 25 mm
EN 2399 Aerospace series - Heat resisting steel FE-PA2601 (X4NiCrTiMoV26-15) - Rm Greater than or equal to 900 MPa - Bars for forged bolts - D less than or equal to 25 mm
EN 2424 Aerospace series - Marking of aerospace products
EN 2491 Aerospace series - Molybdenum disulphide dry lubricants - Coating methods
EN 3638 Aerospace series - Heat resisting alloy FE-PA2601 (X6NiCrTiMoV26-15) - Consumable electrode remelted - Solution and precipitation treated - Sheet, strip and plate - 0,5 mm <= a <= 10 mm
EN 3639 Aerospace series - Heat resisting alloy X6NiCrTiMoV26-15 (1.4980) - Softened and cold worked - Wires for forged fasteners - D ≤ 15 mm - 900 MPa ≤ Rm ≤ 1100 MPa*， 2021-02-28 Update
EN 9100 Quality Management Systems - Requirements for Aviation, Space and Defense Organizations
EN 9133 Aerospace series - Quality Management Systems - Qualification Procedure for Aerospace Standard Products*， 2018-06-01 Update
ISO 3191 Aerospace - Nuts, anchor, self-locking, fixed, single lug, reduced series, with counterbore, with MJ threads, classifications: 1100 MPa (at ambient temperature)/235 °C, 1100 MPa (at ambient temperature)/315 °C and 1100 MPa (at ambient temperature)/425 °C
ISO 5855-2 Aerospace - MJ threads - Part 2: Limit dimensions for bolts and nuts
ISO 5858 Aerospace - Nuts, self-locking, with maximum operating temperature less than or equal to 425 °C - Procurement specification
ISO 8788 Aerospace — Nuts, metric — Tolerances of form and position*， 2024-04-19 Update
TR 3791 Serie Aerospatiale Materiaux Pour Ecrous@ Douilles Filetees Et Filets Rapportes A Freinage Interne Par Deformation Des Classes De Temperature Less Than or Equal to 425 Degrees Celsius (Edition 3)
EN 3768:2012 history
2012EN 3768:2012 Aerospace series - Nuts, anchor, self-locking, one lug, fixed, reduced series, with counterbore, in heat resisting steel, MoS2 lubricated - Classification: 1100 MPa (at ambient temperature)/315 °C