This standard BS EN 2327:2006 Aerospace series. Washers, lock, with radial serrations in alloy steel, cadmium plated for flight control rods. Dimensions is classified in these ICS categories:
49.030.50 Washers and other locking elements
This standard specifies the characteristics of lock washers with radial serrations primarily intended for flight control rods. These lock washers are intended to immobilise the rod end in relation to the rod body, whilst allowing a precise positional adjustment.