DS EN 3152:2005 Aerospace Series - Nuts, Self-Locking, Mj Threads, In Heat Resisting Steel Fe-Pa2601 (A286), Silver Plated Or Uncoated - Classification: 1100 Mpa (At Ambient Temperature)/425 Degrees C - Technical Specification Defines the technical; qualification and acceptance requirements for self locking nuts with MJ threads in FE-PA2601, silver plated or uncoated for aerospace applications.