Locking and loosening prevention within the part, no additional components, keys or extra machining needed Five Locknut Series with Radial, Axial or 30° style in 6 to 200mm diameters Precision ISO 4H AISI 4140 steel with hardness of HRC 28-32 Low axial run-out for accurate assembly and uniform loading of bearings and other components
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It also looks as though somebody has already trademarked Nook Industries so you are out of luck there...
NEW! - NOOK Precision Locknuts
Five Locknut Series with Radial, Axial or 30° style in 6 to 200mm diameters
Precision ISO 4H
AISI 4140 steel with hardness of HRC 28-32
Low axial run-out for accurate assembly and uniform loading of bearings and other components