BS/EN 3903-2017 pdf download.Aerospace series-Washers , laminated , in corrosion resisting steel.
This BS/EN 3903 specifies the characteristics of laminated washers, in corrosion resisting steel. for maximum operating temperature 120 °C, for aerospace applications.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. 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 series — Marking of aerospace products
EN 9100, Aerospace series — Quality Management Systems — Requirements for Aviation, Space and
Defence Organizations
3 Required characteristics
3.1 Configuration – Dimensions – Masses
See Figure 1 and Table I. Dimensions and tolerances are in millimetres.
3.2 Material
Austenitic corrosion resistant steel Rm  440 MPa
5 Marking
EN 2424 style G
6 Quality assurance
EN 9100.BS/EN 3903-2017 pdf download.

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