Applying the principle of a "wedge" to nuts! A hard lock nut recognized by the world.
The cause of loosening screws lies in the play (clearance) of the threads between the bolt and the nut, and if this can be completely eliminated, it would achieve the ideal anti-loosening effect. Our anti-loosening effect utilizes the "wedge," which has been used in wooden construction for a long time. We have conducted extensive research and developed a product that applies the principle of this "wedge" to the nut. That groundbreaking product is the 'HLN Hard Lock Nut.' 【Features of the HLN Hard Lock Nut】 ■ Anti-loosening effect recognized worldwide ■ Torque and axial force management possible ■ Reusable ■ Easy and good workability ■ Contributes to significant cost reduction *For more details, please refer to the PDF materials or feel free to contact us.
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Company information
Hard Rock Industries is a company that develops, produces, and sells "lock nuts," and it was established in 1974. Our Hard Rock Nuts were created from the strong desire of our founder and technical president, Katsuhiko Wakabayashi, to eliminate accidents caused by loosening screws and to create a safe and secure society. We are still advancing the development and improvement of new anti-loosening products. Our products are used in critical safety locations and areas where maintenance and inspection are difficult. <Main Clients> Railway market (vehicles, tracks, overhead lines, etc.), bridges and highways, transmission towers for power lines, construction and civil engineering, plant equipment, industrial machinery, and more.
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