DS EN 2856:2006
DS EN 2856:2006 Aerospace Series - Nuts, Anchor, Self-Locking, Fixed, Closed Corner, Reduced Series, With Counterbore - Classification: 1100 Mpa/235 Degrees C Defines requirements for closed corner, counterbored, fixed, reduced series anchor nuts, with a self-locking feature achieved by forming the upper portion out-of-round.