BS EN 3034-2009 pdf download.Aerospace series Nuts, self-locking, hexagonal with captive washer In heat resisting steel FEPA92HT (A286), silver coated Classification: 1100 MPa/425 °C.
This BS EN 3034 specifies the dimensions of self-locking, silver coated hexagonal nuts with captive washer and MJ-thread in heat resisting steel FE-PA 92 HT (A286) for aerospace applications.
Maximum test temperature of the parts is 425 DC.
2 Normative references
EN 2399 Aerospace series – Heat resisting steel FE-PA2601 (X4NiCrTiM0V26-1 5) – Rm  900 MPa – Bars for forged bolts – D  25 mm
EN 2424 Aerospace series — Marking of aerospace products
EN 2516 Aerospace series — Passivation of corrosion resistant steels and decontamination of nickel base alloys
EN 2786 Aerospace series — Electrolytic silver plating of fasteners
EN 3152 Aerospace series — Nuts, self-locking, MJ threads, in heat resisting steel FE-PA2601 (A286), silver plated or uncoated — Classification: 1 100 MPa (at ambient temperature) I 425 DC — Technical specification
EN 3638 Aerospace series — Heat resisting alloy FE-PA2601(X6NiCrTiM0V26-15) — Consumable electrode remelted — Solution and precipitation treated — Sheet, strip and plate — 0,5 mm ≤ a 10mm
EN 3639 Aerospace series — Heat resisting alloy FE-PA2601 — Softened and cold worked — Wire for forged fasteners D ≤ 15 mm—900 MPa≤ Rm ≤ 1100 MPa1
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
Configuration shall be in accordance with the figure; dimensions, tolerances and masses shall conform to the figure and the table. Details of form, not stated are at the manufacturer’s option. Dimensions apply after coating.
3.2 Material
Nut: Heat resisting steel FE-PA 92 HT according to EN 2399, EN 3638 or EN 3639.
Washer: Heat resisting steel FE-PA 92 HT according to EN 3638 or steel FE-PA 15.
Pubhshed as ASD Prestandard at the date of publication of this standard.
3.3 Surface treatment
Nut: Silver coat to EN 2786, coating thickness 5 pm to 15 pm.
On nuts Mi 6 and larger. the coating thickness shall not be less than 5 pm. measured at the pitch diameter.
Nuts MJ 5 and smaller shall show complete coating coverage on the threads.
Washer: Passivated to EN 2516.
5 Marking
Each hexagonal nut shall be marked in accordance to EN 2424, dass F.
6 Technical specification
The hexagonal nuts shall conform to the requirements of EN 3152.BS EN 3034-2009 pdf download.