BS 3539:2010 pdf download – Aerospace series — Nuts, anchor, self- locking, one lug, fixed, with counterbore, in heat resisting steel, MoS lubricated — Classification: 1 100 MPa (at ambient tem- perature) / 315 °C
1 Scope
This standard specifies the characteristics of one lug counterbored fixed anchor nuts, with a self-lockingfeature achieved by forming the upper portion out-of-round, in heat resisting steel, MoSz lubricated.
Classification: 1 100 MPa 1) / 315 °℃ 2).
2 Normative references
The following referenced documents are indispensable for the application of this document.For datedreferences,only the edition cited applies. For undated references, the latest edition of the referenceddocument (including any amendments) applies.
EN 2398,Aerospace series — Heat resisting steel FE-PA2601 (X6NiCrTiMoV26-15)—Rm≥900 MPa—Barsfor machined bolts —D≤25 mm
EN 2399, Aerospace series —Heat resisting steel FE-PA2601(X6NiCrTiMoV26-15)—Rm≥900 MPa —Barsfor forged bolts -D< 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 electroderemelted —Solution and precipitation treated — Sheet, strip and plate — 0,5 mm sa s10 mm EN 3639,Aerospace series — Heat resisting alloy FE-PA2601—Softened and cold worked —Wire for forgedfasteners -Ds15 mm - 900 MPa ≤Rm≤1 100 MPa 3) EN 9100,Quality Management Systems — Requirements for Aviation, Space and Defense Organizations EN 9133,Aerospace series — Quality management systems — Qulification procedure for aerospacestandard parts ISO 3168,Aerospace — Nuts,anchor,self-locking, fixed,single lug, with counterbore,with MJ threads,classifications: 1 100 MPa (at ambient temperature)/235 C, 1100 MPa (at ambient temperature)/315 C and1 100 MPa (at ambient temperature)y/425 ℃-Dimensions ISO 5855-2,Aerospace — MJ threads — Part 2: Limit dimensions for bolts and nuts IS0 5858,Aerospace —Nuts, self-locking, with maximum operating temperature less than or equal to 425 ℃一Procurement specification ISO 8788,Aerospace- Nuts,metric- Tolerances of form and position TR 3791, Aerospace series — Materials for self-locking nuts, threaded inserts and screw thread inserts of temperature classes ≤ 425 °C 4) 3 Required characteristics 3.1 Configuration — Dimensions — Masses See Figure 1 and Table 1. Dimensions and tolerances are in conformity with ISO 3168, expressed in millimetres and apply before MoS 2 lubrication. Form and position tolerances shall be in conformity with ISO 8788. 3.2 Materials EN 2398, EN 2399, EN 3638, EN 3639 or TR 3791. 3.3 Surface treatment EN 2491, thickness not specified.