Japan's Top Inventions Season 2 Episode 5 : Stay-Tight Fasteners hd
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Japan's Top Inventions Season 2 Episode 5 : Stay-Tight Fasteners
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Title:Japan's Top Inventions
Genre: Documentary
Air Date: 2019-05-09
Season Number: 2
Episodes Number: 5
Overview: 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!
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