Self-management is a characteristic of many forms of socialism, with proposals for self-management having appeared many times throughout the history of the socialist movement, advocated variously by market socialists, communists, and anarchists. There are many variations of self-management.
The Loctite 0.2 fl. oz. Blue 242 Thread Locker is designed to lock and seal threaded fasteners to prevent loosening from vibration. It prevents leaks and the rusting of threads. It eliminates the need to stock expensive lock nuts and lock washers. California residents: see Proposition 65 information.
Understand some other nomenclature that sometimes goes with screw threads. Thread classes refer to fitting how loosely or tightly the screw fits in the nut. The most common thread classes are 2A or 2B. A indicates an external thread, such as on a screw or bolt. B indicates an internal thread, such as on a nut.