BS EN 3686-2008 pdf download.Aerospace series Bolts, double hexagon head, relieved shank, long thread, in heat resisting steel FE-PA92HT (A286), silver plated Classification:1 100 MPa/650 °C.
This BS EN 3686 specifies the characteristics of double hexagon head bolts with relieved shank and long thread. in heat resisting steel FE-PA92HT, silver plated, tensile strength class 1100 MPa at room temperature. The maximum test temperature of the material is 650 °C.
These bolts are to be used in aerospace fastening systems mainly stressed in tension.
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.
EN 2424. Aerospace senes — Marking of aerospace products1)
EN 2786. Aerospace series — Electrolytic silver plating of fasteners1
ISO 3353-1, Aerospace — Lead and runout threads — Part 1: Rolled external threads
EN 3685, Aerospace series — Bolts, in heat resisting steel FE-PA 92HT (A 286) — Classification:
1 100 MPa/650 C — Technical specification1)
EN 3761, Aerospace series — Heat resisting alloy FE-PA 2601 — Softened and cold worked— Bar for forged
fasteners 0 ≤ 50 mm, 1100 MPa ≤ R ≤ 1 300 MPa1)
ISO 4095, Aerospace — Bihexagonal drives — Wrenching configuration — Metric series ISO 5855-1, Aerospace — MJ threads — Part 1: General requirements
ISO 5855-2, Aerospace — MJ threads — Part 2: Limit dimensions for bolts and nuts
3 Required characteristics
3.1 ConfIguration, dimensions, tolerances, masses
The configuration shall be in accordance with Figure 1. Dimensions, tolerances and masses shall conform
with the values shown in Figure 1 and in Tables 1 and 2 after silver plating.
3.2 Surface roughness
See Figure 1.
5 MarkIng
Each bolt shall be marked Wi accordance with EN 2424, Style A as kidted In FIgure 1.
6 TechnIcal specification
According to EN 3685.BS EN 3686-2008 pdf download.