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Announcement of the opening of the information site "U-TOWN" for U-NUT・FINE U-NUT.
Fujiseimitsu, a comprehensive manufacturer of locking nuts, opened a new information site called 'U-TOWN' on January 20th (Thursday) to help you learn more about U-NUT and FINE U-NUT. This site was created as a platform to smoothly provide information and materials to our customers. Additionally, we have also revamped our corporate site. We invite you to take a look at our newly updated information site, which now features a variety of useful information.
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The production number of 【Fuji Precision】's lock nut 'U-NUT' is... ●● million pieces per day!
The "U-NUT," which can be said to be synonymous with Fujiseimitsu's brand, has over 200 variations in size and material. All of these products are manufactured at Fine Tech's second factory. We operate about 30 machines across six types of manufacturing equipment, producing an astonishing 200,000 to 250,000 U-nuts per day! This amounts to a total of 240 million units annually. 【How U-NUTs are Made】 1. The initial shape of the nut is formed using a cold forging machine. 2. In the threading process, it is processed with a tapping machine. 3. To remove any oil attached to the product, washing and drying are performed. 4. The final step involves using our own press machine and riveting mold to rivet the product. No matter how harsh the usage environment, our product demands safety and reliability. It continues to evolve not only in terms of anti-loosening performance but also in durability and vibration resistance.

About株式会社冨士精密
Comprehensive manufacturer of lock nuts.
Since our establishment in 1962, Fuji Precision has focused exclusively on the research and development of locking nuts, growing into a comprehensive manufacturer of locking nuts. The 'U-Nut' brand was the first in the industry to introduce the "metal ring locking function" to bolts and nuts, which were traditionally considered prone to loosening. This groundbreaking product received a significant response upon its release and has now grown to capture a 50% share of the domestic market, becoming synonymous with locking nuts. Although bolts and nuts may be considered small parts, they play a crucial role in connecting functions and technologies. They can be described as cross-point technology that combines cutting-edge technologies and opens up new technological fields. Fuji Precision regards this theme as an eternal proposition and has been committed to product development that anticipates the needs of the times, while pursuing high quality and high added value in our products. Our future goal is to become the world's number one comprehensive manufacturer of locking nuts. We will continue to strive to create products that meet your trust and contribute to the industrial sector and society.