BS EN 4702‑05 is part five of a multi-series of European standards on quick-release fastening systems for non-structural and lining applications which covers retaining washer
BS EN 4702‑05 specifies the dimensions, mass tolerances of quick-release and locking – washers for use in fuselage interior equipment and non-structural or secondary structural area.
BS EN 4702-05 on retaining washer is useful for:
The quick release fasteners are maintenance-free, vibration-resistant and have a captive seal to prevent loss. It comprises a hardened steel locking bolt, a plastic retainer and a spring steel slip-on lock bottom.
Retaining washers are fasteners that grip the outside of screws, bolts, and smooth shaft components to secure assemblies and prevent turning, slipping, and loosening. Also called push nuts, they are suitable for applications that are subject to vibration, torque, heat, or corrosion.
Fuselage interior equipment and non-structural or secondary structural area are very important aerospace applications and with the help of BS EN 4702‑05 specifies the dimensions, mass tolerances of quick-release and locking washers, you can make this process easier.
EN 4702-05:2017