A new screw, "Motion Tight," with an elastic structure of the threads that prevents loosening just by tightening normally! It contributes to weight reduction without the need for fastening components.
The "Motion Tight" developed by Art Screw exhibits the elastic rebound force of the screw threads simply by tightening it like a regular screw, preventing loosening and breakage. Since there is no need to use adhesives or special nuts, it is resistant to temperature changes and there is no concern about contamination. These features lead to significant cost reductions. Additionally, it meets the mechanical properties of JIS standards, such as tensile strength and guaranteed load stress, and by averaging the load distribution of the screw threads, it maintains 1.2 times the fatigue strength, contributing to weight reduction as well. 【Exhibition Information】 ■First Event Exhibition Name: AXIA EXPO 2026 Date: June 3 - June 5 Venue: Aichi Sky Expo (5-10-1 Centrair, Tokoname City, Aichi Prefecture) Booth Number: E-36 ■Second Event Exhibition Name: Automotive Technology Exhibition NAGOYA 2026 Date: June 17 - June 19 Venue: Aichi Sky Expo (5-10-1 Centrair, Tokoname City, Aichi Prefecture) Booth Number: 304 *For more details, please contact us via the "Contact Us" button below or feel free to view the materials from the "Download Catalog" button.
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basic information
【Patent Numbers】 ■Patent No. 4806103 ■Patent No. 4878407 【Evaluation Tests】 ■NAS Vibration Test →Passed the vibration test with a total of 30,000 rotations in 17 minutes ■Yunker Vibration Test →Comparison data with standard products available on the official website ■Fatigue Test: JISB1081 →Approximately 20% improvement ■Load Distribution Rate (%) Standard Bolt: Motion Tight →Thread No. 1 32.9： 26.4 →Thread No. 2 19.7： 19.6 →Thread No. 3 14.1： 15.6 →Thread No. 4 11.5： 13.4 →Thread No. 5 10.4： 12.2 →Thread No. 6 11.4： 12.8 → Total 100.0： 100.0 *Motion Tight has a more averaged load distribution rate compared to standard products, resulting in higher fatigue strength and reduced likelihood of breakage. *For more details, please refer to the catalog. Feel free to contact us with any inquiries.
Price information
Please contact us.
Delivery Time
※In-stock items: approximately 1 week / Made-to-order items: approximately 1 to 2 months
Applications/Examples of results
- Automobile - Motorcycle - Others *For more details, please contact us or download the catalog.
Detailed information
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Motion-tight structure diagram The entire thread profile exerts a strong spring force, creating a force that tries to return to the seat side.
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Before the conclusion: Contact from the summit. The axis of the bolt is drawn out and extended from the summit as the starting point.
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After the connection: Contact on the plane The axis makes contact with the female thread (nut) on the plane as it extends. The extended axis generates a strong anti-loosening force as it tries to return to its original state.
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[Regarding Stress Concentration] - General screws have stress concentration at 3 threads. - Motion-tight screws distribute stress across all threads. - Fatigue strength is improved, making them more resistant to delayed failure.
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Company information
Art Screw Co., Ltd. is a company that develops, manufactures, and sells anti-loosening screws. Its flagship product, Motion Tight, holds infinite potential, contributing to cost reduction and weight savings through the reduction of bolts. We hope that it will be distributed worldwide in the future, and if this standard becomes the de facto standard soon, it may reduce accidents caused by screw loosening and help create a safer world.
![Loosening Prevention Bolt "Motion Tight" [*Prototype Trials Now Open!]](https://image.mono.ipros.com/public/product/image/1e9/2000328901/IPROS23736470797022945968.png?w=280&h=280)
