**1. Introduction**

Mechanical assembly method had been used for a long time along the history of mankind. In 300 BC, the idea of Archimedes screw had been introduced to move fluid from lower level to upper level. This was the first application of using a screw. In 1500, spindle press had been introduced with a threaded assembly. In 1900, various mechanical locking devices had been introduced to assemble mechanical parts in many industries. In 1956, a liquid anaerobic thread locking adhesive had been developed and introduced to the machinery assembly industry. Since then, this one drop of chemical liquid has provided those R&D, production and quality engineers with an insight to eliminate those problems and issues of current mechanical fastener design they have strived to solve or improve for a long time. Various new mechanical fasteners have been designed and introduced continuously to industry over time with a high cost but still had an issue of ultimate loosening any time beyond mechanical assembly manufacturers' control.
