BS EN 3020-2008 pdf download.Aerospace series — Self-locking plate nuts, floating, two-lug, in heat resisting steel FE-PA92HT (A286), silver plated —Classification:1 100 MPa (at ambient temperature)/650 °C.
This BS EN 3020 specifies the characteristics of self-locking, floating plate nuts in FE-PA2601, silver plated, for aerospace applications.
Classification: 1100 MPa1)/650 “C2
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 2399, Heat resisting steel FE-PA 92HT — Rm  900 MPa — Bars for forged bolts — 0 ≤ 25 mm — Aerospace series3)
EN 2424, Aerospace series — Marking of aerospace products4)
EN 2786, Aerospace series — Electrolytic silver plating of fasteners4)
EN 3004, Aerospace series — Nuts. self-locking, MJ threads, in heat resisting steel FE-PA2601 (A286) — Classification: 1100 MPa (at ambient temperature)/650 °C — Technical specification
EN 3638, Aerospace series — Heat resisting alloy FE-PA2601 (X6NICrTIMoV26-15), consumable electrode remelted, solution and precipitation treated— Sheet, strip and plate 0,5mm ≤ as 10 mm41
EN 3639, Aerospace series — Heat resisting alloy FE-PA2601 — Softened and cold worked — Wire for forged fasteners D≤ 15 mm. 900 MP8≤Rm 1 100 MPs4)
ISO 5855-2, Aerospace — MJ threads — Part 2: Limit dimensions for bolts and nuts
3 Required characteristics
3.1 Configuration, dimensions, tolerances, masses
See Figure 1 and Table 1. Dimensions and tolerances apply after silver plating.
3.2 Material
Nut element: EN 2399, EN 3638 or EN 3639
Cage: EN 3638.BS EN 3020-2008 pdf download.