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[Video Release] We have released a product video for the TM-320 series retaining washers.
We have released a product video for the TM-320 series retaining washers on YouTube. ■Features This washer provides a retaining effect by being pressed onto the tips of screws and bolts after panel insertion. The claws fit with the screw section, demonstrating a strong effect. Once installed, the washer cannot be removed without destruction, ensuring a robust retention of screws and bolts. For equipment and devices exported to EU member countries, it is recommended by the Machinery Directive within the CE regulations that bolts do not fall off when removing covers. This washer is suitable for that purpose, as it does not come loose due to vibrations during transport, ensuring safety. We offer five sizes: M3, M4, M5, M6, and M8, making it suitable for a wide range of screws and bolts. If you require other sizes, please consult with our representative. Made of stainless steel, it can be used in areas exposed to water and outdoors.
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We have published the 【Supplementary Catalog】 2025 TOCHIGIYA INDEX & Examples of Use.
We have released the 【Supplementary Catalog】 2025 TOCHIGIYA INDEX & Examples of Use. In addition to a product photo index categorized by purpose, use, and function, we have included examples of products developed to address issues raised by our customers, showcasing solutions to their challenges. Please feel free to download and take a look!
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[Video Release] We have released a product introduction video for the Stopper TL-249 series.
We have released a product introduction video for the Stopper TL-249 series on YouTube. This product is a latch designed to secure lids and doors. Additionally, it is held in place by a spring, preventing unintended openings even in areas with vibrations.
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We have published the separate catalog for gas springs.
We have published the separate catalog for gas springs. Please feel free to download and take a look!
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We have published the separate catalog for semiconductor manufacturing equipment and cleanroom products.
We have published the 【Supplementary Catalog】 for semiconductor manufacturing equipment and cleanroom products. Please download it and take a look!

About栃木屋
Tochigiya has a history of over 100 years. Based on the know-how, technology, and ideas we have cultivated so far, we provide reliable products.
Tochigiya leverages years of experience and knowledge to develop cutting-edge products that meet the needs of the times. We will continue to take pride in our confidence as a specialized manufacturer of mechanical components and respond to the advanced demands of various industries. Additionally, even if it is not a commercially available product or catalog item, Tochigiya can create it for you. If you have concerns such as, "I wonder if this material can be used..." or "Can we add this function..." or "I want to keep it within this budget...", please feel free to consult with us. Tochigiya will solve your "wants."