This standard specifies characteristics for one lug, reduced series, counterbored, fixed anchor nuts, with a
self-locking feature achieved by forming the upper portion out-of-round, in steel, cadmium plated, MoS2
lubricated, classification 1 100 MPa 1)/235°C.
BS EN 3712:2007 Referenced Document
EN 2133 Aerospace series - Cadmium plating of steels with specified tensile strength ≤ 1450 MPa, copper, copper alloys and nickel alloys*, 2020-11-30 Update
EN 2424 Aerospace series - Marking of aerospace products
EN 2491 Aerospace series - Molybdenum disulphide dry lubricants - Coating methods*, 2011-06-01 Update
EN 2542 Aerospace series - Steel FE-PL1502 (25CrMo4) - Annealed - Bar and wire - De Less Than or Equal to 40 mm - For prevailing torque nuts*, 2008-11-01 Update
EN 2543 Aerospace series - Steel FE-PL1502 (25CrMo4) - Annealed - Sheet and strip - 0,3 mm <= a <= 2 mm - For prevailing torque nuts*, 2009-03-01 Update
EN 9100 Quality Management Systems - Requirements for Aviation, Space and Defense Organizations*, 2009-08-01 Update
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
BS EN 3712:2007 history
2008BS EN 3712:2008 Aerospace series - Nuts, anchor, self-locking, one lug, fixed, reduced series, with counterbore, in steel, cadmium plated, MoS2, lubricated - Classification: 1100 MPa (at ambient temperature)/235 °C
2008BS EN 3712:2007 Aerospace series - Nuts, anchor, self-locking, one lug, fixed, reduced series, with counterbore, in steel, cadmium plated, MoS2, lubricated - Classification: 1100 MPa (at ambient temperature)/235°C