This standard defines the characteristics of axial mounting internal retaining rings, in steel, vacuum cadmium plated, for aerospace applications. The cadmium plating restricts the use at temperatures not exceeding 235 ℃.
EN 3383:2012 Referenced Document
EN 2424 Aerospace series - Marking of aerospace products
EN 2535 Aerospace series - Vacuum deposition of cadmium
EN 3380 Aerospace series - Rings, retaining - Technical specification
EN 3425 Aerospace series - Groove dimensions for axial mouting internal type retaining rings