Japan's Top Inventions Season 2 Episode 5 Stay-Tight Fasteners 2019
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The behind-the-scenes tales of hit products and creations from Japan: this is Japan's Top Inventions. This time, a product used in over 20 countries and regions: stay-tight fasteners, nuts used with bolts in railroads, bridges, towers, and more. When normal nuts experience vibration, they sometimes come loose. But stay-tight fasteners, developed in Japan in 1974, overcame this problem. Learn the dramatic story behind the nuts, including a surprising spot that inspired their creation: a shrine!
- Released: 2019-05-09
- Runtime: 60 minutes
- Genre: Documentary
- Stars:
- Director:
