Last Updated： Aggregation Period:Aug 27, 2025～Sep 23, 2025
This ranking is based on the number of page views on our site.
Last Updated： Aggregation Period:Aug 27, 2025～Sep 23, 2025
This ranking is based on the number of page views on our site.
Last Updated： Aggregation Period:Aug 27, 2025～Sep 23, 2025
This ranking is based on the number of page views on our site.
31～38 item / All 38 items
It is a washer that fits the shape of metal roofs such as folded plate roofs and has good compatibility with packing.
It is a washer that fits the shape of metal roofs such as folded plate roofs and has good compatibility with packing. *For more details, please download the catalog or feel free to contact us.*
Introducing washers that stop firmly in place because of their notches, for external insulation installation.
"Tsume Pita" is a thin plate fastening washer that can securely fix external insulation materials. It is a special washer with "tsume" attached to a thin steel plate, which stays firmly in place when inserted into foam plastic insulation, making it easy to drive in screws or nails and securely fix the insulation. 【Features】 ■ Can securely fix insulation materials ■ Special washer with "tsume" attached ■ Stays firmly in place when inserted into foam plastic insulation ■ Easy to drive in screws or nails *For more details, please refer to the PDF document or feel free to contact us.
We respond to all needs in a wide range of fields such as architecture, civil engineering, and roads!
At Wako Metal Industry Co., Ltd., we perform hot-dip galvanizing on round washers, various washers, special washers, and stainless steel round washers. We have facilities for mold making, press processing, bending, welding, lathe work, and other processes, and we conduct integrated production for surface treatments, including hot-dip gold plating (HDS), zinc plating, chromate (trivalent/hexavalent), and powder coating. We can process products ranging from small items to those approximately 2 meters in length, so please feel free to contact us. 【Features】 ■ Integrated production ■ Cost reduction ■ Response to all needs *For more details, please refer to our catalog or feel free to contact us.
Easy visual confirmation of tightening! Responds to loosening due to wood shrinkage and other factors.
The "NRT Washer II" is a spring-function washer used for M12 bolt and nut fastening locations. It is a certified product by the Building Materials Testing Center, with a short-term allowable embedment resistance of 10.0 kN for coniferous trees, 8.6 kN for hinoki trees, and 6.7 kN for cedar trees, which is equivalent to or greater than the Z corner washer 4.5×40. Additionally, it is easy to confirm the fastening just by visually checking if the seating surface is flush. 【Features】 ■ Thin and lightweight ■ Prevents loosening with spring function and raised seating surface cut ■ Easy fastening confirmation *For more details, please refer to the catalog or feel free to contact us.
Seismic seat "Titanic" that prevents the decrease in seismic strength due to wood shrinkage. No need for additional tightening! Easy to install! Strong against vibrations!
"Taitonic" is a washer that follows wood shrinkage and does not loosen. It adapts to wood shrinkage with internal springs and tightens using the "wedge" effect of the magic ring. The seismic performance of a house is based on the premise that structural joints are firmly connected. "Taitonic" does not degrade the inherent seismic performance of the house. Additionally, "Taitonic" converts the vibrations acting on the house into a tightening force with the magic ring. This means it does not loosen not only during earthquakes but also from continuous vibrations such as those caused by typhoons or road traffic. 【Features】 ■ Tightens in response to wood shrinkage ■ Converts vibrations into a tightening force with the magic ring ■ Makes it difficult for the house to sway from earthquakes, vehicle vibrations, or typhoon winds ■ Withstands large forces with light tightening force *For more details, please refer to the PDF document or feel free to contact us.
![Vibration-resistant, non-loosening washer [Titanic]](https://image.www.ipros.com/public/product/image/c5a/2000527648/IPROS10714361912000389843.jpeg?w=280&h=280)
Can be used for medium to large structures. Strong against vibrations! Easy to install! No need for re-tightening! Seismic-resistant washer "Titanic" that accommodates various joints.
"Titanic" converts the vibrations at the joints into a tightening force with the magic ring. It does not loosen even under continuous vibrations. 【Features】 ○ Converts vibrations into a tightening force with the magic ring ○ Makes houses less likely to sway from earthquakes, vehicle vibrations, or typhoon winds ○ Withstands large forces with a light tightening force You can see examples of its use in large-scale wooden structures at the joints. *For more details, please refer to the PDF materials or feel free to contact us.
![The joint for wooden construction uses vibration-resistant and non-loosening washers [Titanic].](https://image.www.ipros.com/public/product/image/2f4/2000914970/IPROS93389249624084287937.jpeg?w=280&h=280)
Can be used for medium to large-scale wooden structures. Strong against vibrations! Easy to install! No need for re-tightening! Seismic-resistant washer "Titanic" compatible with various joints.
"Titanic" converts the vibrations at the joints into a tightening force using the patented technology "Magic Ring." It does not loosen even under continuous vibrations. 【Features】 - Converts vibrations into a tightening force with the Magic Ring - Follows the wood's natural movement, eliminating the need for re-tightening - Reduces the swaying of houses during earthquakes, vehicle vibrations, and typhoon winds - Withstands large forces with a light tightening force - Available in types suitable for outdoor use You can see examples of its use in large-scale wooden structures at the joints. *For more details, please refer to the PDF materials or feel free to contact us.
A simple way to eliminate supply chain issues! Work time can be reduced depending on the site conditions.
The "Backup Washer" is a product that eliminates the need for a backup wrench simply by placing it under the nut, just like a regular washer. When using this product for bolt tightening, there is no need to use a backup wrench. Safety risks, such as pinching fingers, are eliminated. 【Features】 ■ No backup wrench required ■ Reduced working time ■ Cost-effective *For more details, please refer to the related links or feel free to contact us.
