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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

Related product

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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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CCS3 product photo

The new product "Vehicle Count Sensor CCS3" enables efficient occupancy management of large parking lots.

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Hotron Inc. has launched its new product, the "Vehicle Count Sensor CCS3"! This product is a ceiling-mounted sensor that combines infrared and radar technology. It reliably detects vehicles in both directions with a single unit, accommodating traffic during congestion and vehicle passing, thus achieving efficient occupancy management in large parking lots. Additionally, it can be utilized for exit warning purposes in addition to vehicle counting, contributing to the safe and smooth operation of parking facilities. 'Features' - Improved detection performance against changes in road surface during rainy weather by using both infrared and radar. - Equipped with IP67 waterproof and dustproof performance, making it effective even in salt damage areas. - Various settings can be configured from a dedicated app (for Android devices), with current settings easily visible at a glance. - The base dimensions are the same as the previous model "CCS2," allowing for smooth replacement of existing equipment. *For more details, please refer to the product information, catalog download, or contact us.*

Sep 11, 2026

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I participated in the AMD Embedded Computing Summit Tokyo 2026.

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On August 28, 2026 (Friday), I participated in the "AMD Embedded Computing Summit Tokyo 2026" and showcased a "Gesture Demo" as a partner of AMD. The demonstration introduced a configuration that combines gesture recognition using OpenCV, status reporting with LLM, and one-axis motor control using INtime 7.2 and RSI-ECAT, enabling collaboration between AI, image processing, and real-time control on a single PC. We presented a next-generation PC-based industrial control system that integrates AI, image processing, and real-time control on one PC. <Overview of Demo Participation> https://www.mnc.co.jp/INtime/AMDxINtime/AMDEcsTokyoResults.html <Actual Demo Video> https://youtu.be/JmZke75_y0s <AMD CPU + INtime RTOS Introduction Page> https://www.mnc.co.jp/INtime/AMDxINtime/amdxintime.html #PC #RealTimeOS #IndustrialPC #AI

Sep 10, 2026

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[Data] Shirutoku Report 123 # Current Measurement for Switching Evaluation

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This time, I would like to talk a little about current measurement in the switching evaluation of power semiconductors (including power devices and power modules).

Sep 10, 2026

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KSI EXPO 2026 Measurement and 3D Measurement Spatial Digital Comprehensive Exhibition September 16, 2026 (Wednesday) 10:00 AM to 5:00 PM

KSI EXPO 2026 Measurement and 3D Measurement Spatial Digital Comprehensive Exhibition September 16, 2026 (Wednesday) 10:00 AM - 5:00 PM Osaka City Central Public Hall (1-1-27 Nakanoshima, Kita-ku, Osaka)

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From measurement instruments to point cloud processing and analysis software, the latest solutions come together! We propose numerous cutting-edge technologies and products that solve on-site challenges in a one-stop manner. It's not just about seeing; it's about experiencing, consulting, and bringing it back to the field. At the venue, we will showcase the latest measurement instruments and solutions, including 3D laser scanners, handheld 3D scanners, LiDAR drones, and 3DGS (Gaussian Splatting). Additionally, we will announce surprise new products!

Sep 09, 2026

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We have published an article comparing and ranking six system construction manufacturers for 2026 on the Select Beam special site.

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We have updated the article on the website of the semi-custom system construction "Select Beam." When planning factories, logistics warehouses, and stores, "system construction" has become an effective means of achieving cost reduction and shortening construction periods. The rationality of system construction through thorough standardization is very high, and it is adopted in many projects. However, due to the differing characteristics of each manufacturer, many business owners find themselves wondering, "Which manufacturer is suitable for our plans?" and "Is it really optimal compared to conventional methods?" In this article, we will compare and introduce the basic knowledge of the advantages and disadvantages of system construction, as well as recommend manufacturers by purpose in a ranking format. ■ Semi-Custom System Construction "Select Beam" This is a unique method by Sakura Structure, and it is a "third option" that is less expensive than system construction. It is the most suitable method for low-rise long-span buildings such as stores, warehouses, factories, and logistics facilities, as well as high-rise buildings like hotels.

Sep 09, 2026

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