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  1. Home
  2. Other construction industries
  3. 日本プララド
  4. Released the bolt anti-rotation washer "Tsure Zero Washer".
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  • Nov 11, 2024
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Nov 11, 2024

Released the bolt anti-rotation washer "Tsure Zero Washer".

日本プララド 日本プララド
Nippon Prarado Co., Ltd. has released the "Tsure Zero Washer," a washer designed to prevent the rotation of bolts with diameters ranging from M12 to M72. ■ Features of the Anti-Rotation Washer "Tsure Zero Washer" 1. A washer that prevents bolt rotation Unlike washers that utilize surface irregularities from knurled processing to create friction resistance, the anti-rotation Tsure Zero Washer has a special structure that changes the equivalent friction diameter. It has already been applied for international patent. The conical shape on the back and the hexagonal design increase the effective friction diameter against the seating surface, resulting in the reaction torque from the bolt head being more than twice as large as the tightening torque of the nut. This prevents the washer from rotating and stops the bolt head from rotating together. As the tightening torque of the nut increases, the reaction torque from the bolt head also increases, ensuring that the bolt does not rotate until the tightening is complete. 2. Significant reduction in bolt tightening and loosening time, manageable by one person By simply replacing standard flat washers with the Tsure Zero Washer, there is no need for cumbersome anti-rotation tools or backup wrenches, leading to a substantial reduction in the time required for bolt tightening operations.
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zero-washer.pdf[1978349]

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Bolt Anti-Rotation Washer "Tsure Zero Washer" Japan Pralado
Absolutely no bolt rotation! The anti-rotation Tsure Zero Washer has a special structure that changes the equivalent friction diameter, ensuring that the bolt does not rotate. International patent application filed. For M12 to M72.
Principle of Bolt Anti-Rotation and Tsure Zero Washer
Dimension Table for Bolt Anti-Rotation Tsure Zero Washer for M12 to M72

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Anti-rotation washer that absolutely prevents the bolt from rotating together - zero friction washer.

Washer for completely preventing the simultaneous rotation of bolts, suitable for M12 to M72.

■ Completely prevents bolt rotation with the "Anti-Rotation Zero Friction Washer" Bolt sizes: Compatible with M12 to M72. International patent applied for. ■ Features of the Plarad Anti-Rotation Zero Friction Washer Prevents hex bolt rotation. ■ Unlike washers that utilize surface irregularities from knurled processing for friction resistance, the Zero Rotation Washer has a special structure that changes the equivalent friction diameter, ensuring that the bolt does not rotate. ■ By simply replacing standard flat washers, there is no need for cumbersome bolt anti-rotation tools or backup wrench tools, significantly reducing the time required for bolt tightening operations. Additionally, the bolt tightening task, which previously required two workers to hold the tightening tool and the anti-rotation tool, can now be done by one person, improving labor efficiency. - Strength classification: 8.8 - Material: S45C - Surface treatment: Trivalent chromate finish <For inquiries about the bolt anti-rotation Zero Friction Washer> Please contact us for quotes and information requests. Plarad Co., Ltd. TEL: 078-967-3556

  • Joining and fastening materials

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bol-2025.png

The strongest lock nut "Bolrock Nut"

A nut that does not loosen even after 1 million vibration tests (3D vertical and horizontal)! Compatible bolt sizes: M14 to M100.

■ Structure and Non-Loosening Principle of the Strongest Lock Nut "Bolrock Nut" 1. When the nut is subjected to vibration and attempts to loosen counterclockwise, the fine internal balls utilize a clutch mechanism to exhibit a wedge effect, preventing the nut from turning and loosening. 2. The slope angle of the internal balls is designed to be larger than the "screw lead angle," which corresponds to one full turn of the screw. 3. When the nut is tightened, the internal balls automatically move to the deepest part of the groove, aligning the bottom of the nut with the top of the balls, eliminating any gap between them and the floor, thus not affecting the tightening axial force. ■ Vibration Test Condition Data - Bolt Diameter: M16 - Bolt and Nut Material: SCM435 - Frequency: 100Hz - Number of Vibrations: 1,000,000 times - Simultaneous 3D vibration in vertical and horizontal directions While competitor lock nuts loosen after 1,100 to 2,300 vibrations, Plarad's Bolrock Nut has withstood 1,000,000 vibrations, proving its overwhelming vibration resistance. <About the Strongest Lock Nut: Bolrock Nut> For inquiries regarding quotes, requests for materials, etc., please contact us. (Company) Nippon Plarad TEL: 078-967-3556

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Announcement of TV Program Appearance: "Ushiwaka Chapter 6 - The Challenge of Skilled Workers Protecting Japan's Infrastructure"

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The television program "Ushiwaka Chapter 6 - The Challenges of Skilled Workers Protecting Japan's Infrastructure" will feature Azeas. In addition to terrestrial broadcasting, there will also be an archive distribution on ABEMA TV. Please be sure to watch. ● Broadcast Schedule Nagoya TV (Me-Tele): June 2, 2026 (Tuesday) at 23:10 ABEMA TV: June 4, 2026 (Thursday) at 24:00 (Free, with archive distribution available) Hiroshima Home TV: June 4, 2026 (Thursday) at 24:45 KKB Kagoshima Broadcasting: June 7, 2026 (Sunday) at 17:25 *For more details, please feel free to contact us through the related link below: [Protective Clothing Wisdom.com]. [Protective Clothing Wisdom.com] is a comprehensive information site for safe working environments, providing guidance on protective clothing and equipment for different work environments, methods for putting on and taking off, and information on customer usage records.

Jun 08, 2026

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HK-2

Recommended for earthquake measures for automatic doors and equipment! Seismic device HK-2.

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Japan is one of the top 10 countries in the world with frequent earthquakes. The 2020 White Paper on Land, Infrastructure, Transport and Tourism has also reported an increase in the probability of major earthquakes occurring. Regarding the Nankai Trough earthquake, the probability of an earthquake with a magnitude of 8 to 9 occurring within the next 30 years is estimated to be 70 to 80%. At Hotron, we recommend the introduction of seismic devices for earthquake countermeasures in buildings and equipment. The seismic device 'HK-2' is a product that automatically performs various controls that have been pre-set when it detects strong shaking equivalent to a seismic intensity of 5 lower or higher. For example, it can automatically execute actions such as: "Open automatic doors and gates to secure evacuation routes and access for emergency vehicles" "Transmit signals to the control room and stop facility equipment" "Unlock the keys to locked lockers" "Automatically play voice guidance" For more details, please download the materials or contact us.

Jun 05, 2026

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Solve your problems with wired bed exit sensors by connecting a wireless set linked to the nurse call system!

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Do you have any concerns or requests regarding wired bed exit sensors? × Tangling or tripping over wired cables × Cable disconnection or damage × Worrying about forgetting to turn the switch back on after temporarily stopping the sensor. × Wanting to be notified of bed exits even from a location far from the nurse call outlet. Such concerns can be resolved simply by connecting our wireless nurse call linked set to the sensor! Our wireless nurse call linked set allows you to connect bed exit sensors like "Ugo-kun," "Foldable Thin Matta-kun," "Ayumi-chan," and "Just Place Pole-kun" to transmitters and receivers, reducing wiring around the bed area, alleviating concerns about tripping or falling due to cables, and contributing to a tidier work environment. Furthermore, it enables the use of bed exit sensors even from locations far from the nurse call outlet, allowing for more flexible equipment placement.

Jun 05, 2026

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Setting overly optimistic 'projections' compared to reality!? 'Planning Fallacy'

"SBS Marketing Co., Ltd." Tending to set overly optimistic "forecasts"? 'Planning Fallacy'

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Based on practical experience in support companies and business companies, SBS Marketing Co., Ltd. provides consulting services related to marketing, sales promotion, and customer acquisition primarily in the BtoB (business-to-business) sector. On June 4, 2026, we published a page titled "Do We Set 'Forecasts' Too Optimistically Compared to Reality? The 'Planning Fallacy'." The 'Planning Fallacy' refers to the psychological phenomenon of underestimating the time, costs, and risks involved in carrying out tasks while overestimating the benefits. The page explains examples of its occurrence, the factors that lead to it, and methods to overcome it. (Page Overview: Excerpts) ■ What is the 'Planning Fallacy'? ■ Examples of the 'Planning Fallacy' ■ Why does the 'Planning Fallacy' occur? ■ How to overcome the 'Planning Fallacy'? (DL content only) ▼ For more details, please visit this page. https://sbsmarketing.co.jp/blog/planning-fallacy-2026-06/

Jun 05, 2026

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As heatwave risks continue to rise and workplace heatstroke prevention requirements become increasingly important, how can organizations encourage employees to maintain safe behaviors consistently?

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Kort Valuta has released a workplace initiative model that leverages points exchangeable for electronic money to support the adoption of safety and wellness habits. Examples include: ・Hydration reporting ・Viewing heatstroke prevention content ・Pre-shift condition checks ・Voice-based condition checks By linking these activities to incentive points, organizations can encourage voluntary participation while supporting workplace safety and employee well-being. The model is designed not only for frontline environments such as: ・Logistics ・Construction ・Manufacturing but also for office-based health and well-being programs. Safety posters and reminders alone are often not enough to drive lasting behavioral change. We hope this initiative provides a practical example for organizations seeking new approaches to workplace safety and employee engagement. Read the full press release: https://prtimes.jp/main/html/rd/p/000000118.000076589.html #HeatstrokePrevention #WorkplaceSafety #EmployeeWellbeing #HealthManagement #OccupationalHealth #HR #Logistics #Construction #Manufacturing #TwooCa

Jun 05, 2026

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