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Japan's Top Inventions - Season 2 Episode 5 Stay-Tight Fasteners

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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!

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First Air Date: Mar 18, 2018

Last Air date: Jan 11, 2025

Season: 8 Season

Episode: 89 Episode

Runtime: 26 minutes

IMDb: 0.00/10 by 0.00 users

Popularity: 9.549

Language: English