BS EN 4634-2009 pdf download.Aerospace series— Screws, 1000 countersunk head, six lobe recess, short thread, in heat resisting steel FE-PA2601 (A286), passivated— Classification: 900 MPa (at ambient temperature) I 650° C.
2 Normative references
The following referenced documents are indispensable for the application 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.
ISO 3353-1. Aerospace — Lead and runout threads — Part 1: Rolled external threads.
ISO 5855-2, Aerospace — MJ threads — Part 2: Limit dimensions for bolts and nuts.
ISO 7913, Aerospace — Bolts and screws, metric — Tolerances of form and position.
EN 2399. Aerospace series — Heat resisting steel FE-PA2601 (X4NICrT1MoV26-15) — Rm 2 900 MPa — Bars for forged bolts 0 ≤ 25 mm.
EN 2424. Aerospace series — Marking of aerospace products.
EN 2516. Aerospace series — Passivatlon of corrosion resisting steels and decontamination of nickel base alloys.
EN 2576, Aerospace series — Bolts in heat resisting steel FE-PA92HT (A286) — Classification:
900 MPa/650 °C — Technical specification. 1)
EN 3639, Aerospace series — Heat resisting alloy FE-PA2601 — Softened and cold worked Wire for forgedfasteners—0≤l5mm-900MPa ≤Rm≤IIOOMPa. 1)
EN 3911. Aerospace series — Six lobe recess — Geometrical definition. 1) TR 3775, Aerospace series — Bolts and pins — Materials. 2)
3 Required characteristics
3.1 Configuration — Dimensions — Tolerances — Masses
See Figure 1 and Table 1
Dimensions and tolerances are in millimetres and apply after surface treatment.
3.2 Materials
EN 2399. EN 3639, TR 3775.BS EN 4634-2009 pdf download.