DS EN 4047:2005 Aerospace Series - Nuts, Self-Locking, Mj Threads, In Heat Resisting Nickel Alloy Ni-Ph2601 (Inconel 718), Silver Plated - Classification: 1550 Mpa (At Ambient Temperature)/600 Degrees C - Technical Specification Defines the characteristics, qualification and acceptance requirements for self-locking nuts with MJ threads in NI-PH2601, silver plated, for aerospace applications.