DS EN 3721:1995
DS EN 3721:1995 Aerospace Series - Nuts, Bihexagonal, Self-Locking, Deep Counterbored, In Heat Resisting Steel, Fe-Pa92ht (A286), Mos[2] Coated - Classification: 1100 Mpa (At Ambient Temperature)/425 Degrees C Defines the characteristics of self-locking bihexagonal nuts with deep counterbore, in FE-PA92HT, MoS[2] coated, for aerospace applications.