DS EN 3834:2010 Aerospace Series - Nuts, Anchor, Self-Locking, Floating, Two Lug, Incremental Counterbore, In Corrosion Resisting Steel, Mos[2] Lubricated - Classification: 900 Mpa (At Ambient Temperature)/315 Degrees C Defines the characteristics of self-locking, floating, two lug anchor nuts, with incremental counterbore, in corrosion resisting steel, MoS[2] lubricated.