Washer Product List and Ranking from 19 Manufacturers, Suppliers and Companies

Last Updated： Aggregation Period:Aug 27, 2025～Sep 23, 2025
This ranking is based on the number of page views on our site.

Washer Manufacturer, Suppliers and Company Rankings

Last Updated： Aggregation Period:Aug 27, 2025～Sep 23, 2025
This ranking is based on the number of page views on our site.

  1. null/null
  2. ハイトーク/HYTORC ユネックス Tokyo//Trading company/Wholesale
  3. ティ・カトウ 本社 Tokyo//Building materials, supplies and fixtures manufacturers
  4. 4 サンワ・アイ Osaka//others
  5. 5 晃和 Tochigi//Building materials, supplies and fixtures manufacturers
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Washer Product ranking

Last Updated： Aggregation Period:Aug 27, 2025～Sep 23, 2025
This ranking is based on the number of page views on our site.

  1. Washer "Screw Washer (Zaboresu)"
  2. Omega Round Washer 70 II for M12 Anchor Bolt
  3. Omega Round Washer 58 for M12 Anchor Bolt
  4. 4 Backup washer for preventing supply rotation. ハイトーク/HYTORC ユネックス
  5. 5 The joint for wooden construction uses vibration-resistant and non-loosening washers [Titanic]. ティ・カトウ 本社

Washer Product List

1～15 item / All 38 items

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Locking washer (NORD-LOCK)

Locking washer (NORD-LOCK)

Safety, no special tools required, maintenance and inspection possible! Sizes available from M3 to M42.

The "NORD-LOCK washer" is a loosening prevention washer that secures bolts using tension rather than friction resistance. This system consists of a pair of washers, one with a cam surface and the other with a radial rib surface. The angle of the cam (α) is designed to be larger than the lead angle of the screw (β), making it difficult to easily overcome the cam. This creates a wedging effect between the cam surfaces, preventing loosening of the bolt due to rotation. 【Features】 ■ Prevents loosening caused by intense vibrations and fluctuating loads, ensuring safe fastening. ■ Can be quickly and easily installed and removed with standard tools. *For more details, please refer to the PDF document or feel free to contact us.

  • Joints between components

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High-strength stainless steel disc spring washer - heavy load -

High-strength stainless steel disc spring washer - heavy load -

For preventing loosening of high-strength stainless steel!

High-strength fasteners made of stainless steel convert high input into spring action without waste, effectively preventing loosening caused by initial settling or vibrations after fastening. They have high heat resistance and can be used in high-temperature environments of 350 to 370°C. Compared to conventional spring steel products, they can be safely used in harsh environments where corrosion resistance is required.

  • others

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Seal washer

Seal washer

Expect vibration-damping and sound-absorbing effects! It demonstrates sufficient performance even when used directly on the surfaces of black steel and cast iron.

We handle "seal washers." This is a set product that incorporates a rubber packing into a metal-formed bowl-shaped washer. The rubber packing is press-fitted onto the threaded part of the bolt, sealing the fluid at the side. The design minimizes the risk of rubber protruding even when tightened to the appropriate torque. We use SUS304, which is resistant to rust, as the standard material. 【Features】 - Suitable for preventing gas and liquid leakage - Passed pressure testing at 200 atmospheres (20 MPa) - Demonstrates sufficient performance even when used directly on the surfaces of black steel and cast iron - Vibration damping and noise reduction effects - The metal and rubber packing do not resonate with vibrations *For more details, please refer to the PDF materials or feel free to contact us.

  • others

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Flat seat gold 300HV

Flat seat gold 300HV

Mill sheet and inspection certificate are also available! Prevents the nuts and bolt heads from sinking into the joined materials.

Introducing the "Flat Washer 300HV" available at Sanwa Ai. Prevents the nut or bolt head from sinking into the joined material. When the hole diameter is larger than the bolt diameter, it can be used to stabilize the seating surface. Additionally, it has undergone quenching and tempering heat treatment. Please feel free to contact us when you need it. 【Features】 ■ JIS B 1256:2008 ■ Recommended for use with screw parts strength classification 10.9 (JIS B 1061:2020) ■ Material: S45C to S55C (domestic material) ■ Marked with hardness classification 300HV ■ Mill sheet and inspection certificate available *For more details, please refer to the PDF document or feel free to contact us.

  • Safety and consumables

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Flat seat gold 300HV <JIS B 1256:2008 standard>

Flat seat gold 300HV <JIS B 1256:2008 standard>

Material uses S45C to S55C (domestic material)! It is recommended to combine with screw part strength classification 10.9.

We would like to introduce the "Flat Washer 300HV" handled by Sanwa Ai. It prevents the nut or bolt head from sinking into the joined material. When the hole diameter is larger than the bolt diameter, it can be used to stabilize the seating surface. The material used is S45C to S55C (domestic material), and it undergoes bright quenching and tempering heat treatment. 【Features】 ■ JIS B 1256:2008 ■ Recommended for use in combination with screw part strength classification 10.9 (JIS B 1061:2020) ■ Marked with hardness classification 300HV ■ Can provide mill sheets and inspection certificates *For more details, please refer to the PDF materials or feel free to contact us.

  • Safety and consumables

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Flat seat gold 300HV <Avoiding the risk of sinking during bolt fastening>

Flat seat gold 300HV <Avoiding the risk of sinking during bolt fastening>

Marked with a hardness classification of 300HV! It is recommended to combine with screw component strength classification 10.9.

We handle the "Flat Washer 300HV" to avoid the risk of sinking during bolt fastening. This product prevents sinking of the bolt seating surface, which is a cause of loosening of bolts and nuts, and can be used to stabilize the seating surface when the hole diameter is larger than the bolt diameter. The material used is S45C to S55C (domestic material), and it undergoes bright hardening and tempering heat treatment. 【Features】 ■ JIS B 1256:2008 ■ Recommended for combination with screw part strength classification 10.9 (JIS B 1061:2020) ■ Marked with hardness classification 300HV ■ Can provide mill sheets and inspection certificates *For more details, please refer to the PDF document or feel free to contact us.

  • Safety and consumables

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Seal washer <compatible with water, oil, and air>

Seal washer <compatible with water, oil, and air>

For preventing gas and liquid leaks! A washer that can handle water, oil, and air, and can maintain a pressure of 200 atmospheres (20 MPa).

At Sanwa Ai, we handle "Seal Washers." This is a set product that incorporates a rubber packing into a metal-formed bowl-shaped washer. The rubber packing is press-fitted onto the threaded part of the bolt, sealing the fluid at the side. Additionally, this product has passed a pressure test of 200 atmospheres (20 MPa). Please feel free to contact us when you need assistance. 【Features】 - Suitable for preventing gas and liquid leakage - Passed a pressure test of 200 atmospheres (20 MPa) - Demonstrates sufficient performance even when used directly on the surfaces of black steel and cast iron - Vibration damping and soundproofing effects - The metal and rubber packing do not resonate with vibrations *For more details, please refer to the PDF materials or feel free to contact us.

  • others
  • Safety and consumables

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Introduction of Washer from Neji Super

Introduction of Washer from Neji Super

We can accommodate even very small lots! Orders placed by 2 PM will be shipped the same day! Introduction of washers.

This is an introduction to the "washers" available on the online store "Niji Super Dot Com" of Yamamoto Tech Co., Ltd. Our products can be selected from materials such as iron, brass, stainless steel, bronze, aluminum, copper, S45C, titanium, SUS316, SUS316L, and SUS310S. For iron, you can choose from various surface treatments including the raw material (uncoated), chromate, nickel, and more. Additionally, surface treatments tailored to various materials are available. For information on materials and prices, please refer to "Niji Super Dot Com." 【Available Materials】 ■ Iron ■ Brass ■ Stainless Steel ■ Bronze ■ Aluminum ■ Copper, etc. *For more details, please feel free to contact us.

  • others
  • Subsidiary materials

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Seismic Isolation Seat Bracket Tightonic Patent Obtained (No. 2934218)

Seismic Isolation Seat Bracket Tightonic Patent Obtained (No. 2934218)

Seismic Isolation Seat Bracket Tightonic Patent Obtained (No. 2934218)

Light clamping force with great strength. Prevents loosening due to wood shrinkage and vibration. Tightonic prevents misalignment at joints. 【Features】 ○ The internal spring pulls the bolt, and the magic ring tightens the bolt, preventing loosening. ○ The wedge effect of the magic ring creates a unified structure between the bolt and the washer, preventing misalignment. (The base also does not shift) ○ Easy one-touch installation! ○ Compatible with impact wrenches. ● For other functions and details, please download the catalog.

  • Disaster prevention fittings

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Bolt-related products - Washers

Bolt-related products - Washers

There are flat washers, spring washers, toothed washers, and horseshoe-shaped washers, among others.

Products related to bolts and screws include various types and sizes of metric (M) screws and Whitworth (W) screws. Please specify the type of screw (M or W), finish (plated or raw), and material. Japan Life Co., Ltd. has been developing unique products and technologies to meet customer needs in the construction materials sector. Recently, with the transformation of society and the economy, the evolution of surrounding technologies and innovative projects are being promoted. Japan Life Co., Ltd. is also developing and providing new technologies and products to meet the needs of the times. For more details, please contact us or refer to our catalog.

  • Work tools
  • Safety and consumables

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Bolt, nut, washer 'Active X®'

Bolt, nut, washer 'Active X®'

An ideal shape to prevent loosening!

"Active X®" is a bolt, nut, and washer that exhibits stable anti-loosening performance due to its unique shape. Based on a novel concept that absorbs the forces that loosen screws, it achieves high anti-loosening functionality with a simple design, including Active Cross Bolts, which are highly effective at preventing loosening, and Active Cross Nuts, which excel in reusability and enable significant cost reductions. Additionally, Active Cross Washers provide high anti-loosening effects simply by being tightened together with bolts or nuts. Please choose from a wide variety according to your application. 【Features】 ■ Spring effect ■ Rotation prevention ■ High anti-loosening functionality ■ Excellent reusability ■ Significant cost reduction *For more details, please refer to the catalog or feel free to contact us.

  • Safety and consumables

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Seismic isolation washers that make it difficult for houses to shake due to earthquakes and vehicle vibrations【Titanic】.

Seismic isolation washers that make it difficult for houses to shake due to earthquakes and vehicle vibrations【Titanic】.

Installation is one-touch! The magic ring tightens the bottle and prevents it from loosening! It prevents the reduction of strength at the joints and maintains the seismic resistance of new constructions over the long term.

"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 that it does not loosen under continuous vibrations from earthquakes, 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 pressure *For more details, please refer to the PDF document or feel free to contact us.

  • Other store equipment and supplies
  • Safety and consumables
  • Earthquake-resistant construction method

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Doesn't loosen! Follows closely! Seismic seat tight tonic.

Doesn't loosen! Follows closely! Seismic seat tight tonic.

New stainless steel type now available! Seismic-resistant washers for outdoor use. Ideal not only for playground equipment but also for vibration control in outdoor facilities and equipment!

Features of Stainless Steel Tightonic The "Tightonic" is resistant to vibrations, adapts to the aging changes of wood and rubber, and does not loosen. Until now, it has been widely used as a seismic washer for wooden structures, but we have now completed the long-awaited stainless steel "Tightonic" in response to many requests. 【Features】 ■ Suitable for outdoor use ■ Adapts to wood shrinkage for tightening ■ Converts vibrations into tightening force with a magic ring ■ Makes homes less susceptible to shaking from earthquakes, vehicle vibrations, and typhoon winds ■ Withstands large forces with light tightening pressure 【Outdoor Applications】 Playground equipment Fixing lighting fixtures Securing equipment that generates vibrations Fixing devices that expand and contract due to heat, etc. 【Other Applications】 - Marine (vibration suppression/fixing/salt damage) - Electric railways (vibration suppression/fixing) - Factories (fixing joints) - Livestock facilities (fixing joints in cattle and pig barns, etc.) - Playground equipment (fixing tightening hardware) *For more details, please refer to the PDF document or feel free to contact us.

  • Other store equipment and supplies

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Doesn't loosen! Follows closely! Rust-resistant! Seismic-resistant washer tight tonic for outdoor use.

Doesn't loosen! Follows closely! Rust-resistant! Seismic-resistant washer tight tonic for outdoor use.

A new rust-resistant type of Titanik that is strong against rust has arrived! It can now be used for outdoor equipment and structures!

Features of Rust-Resistant Type Taitonic This is a new type of Taitonic that inherits the excellent performance of "not loosening" and "following" from previous models, and has been finished with rust-resistant treatment. It is strong against vibrations and can withstand significant forces with low torque tightening. The magic ring utilizes the principle of a wedge to tighten the bolts, providing a powerful anti-loosening effect. It does not loosen even with the aging shrinkage of materials like wood. The Taitonic with rust-resistant treatment features a completely chrome-free plating process that is environmentally friendly. 【Features】 ■ Suitable for outdoor use ■ Tightens in response to wood shrinkage ■ Converts vibrations into tightening force with the magic ring ■ Withstands significant forces with low torque tightening 【Outdoor Applications】 Fixing outdoor benches and louvers Securing connections in outdoor facilities Fixing equipment installed outdoors that generates vibrations Securing connections that undergo aging shrinkage 【Other Applications】 - Benches and fences (vibration suppression/fixing) - Structures exposed to rain (fixing joints) - Livestock facilities (fixing joints in cow and pig barns, etc.) - Playground equipment (fixing tightening hardware) *For more details, please feel free to contact us.

  • Other store equipment and supplies

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For connecting and securing metal and wood, use a tightonic that is non-loosening and rust-resistant.

For connecting and securing metal and wood, use a tightonic that is non-loosening and rust-resistant.

A rust-resistant type of the widely recognized non-loosening washer "Titanic" for seismic-resistant applications in the housing sector is now available for M8 bolts!

Features of Rust-Resistant Type Taitonic This is a new type of Taitonic that inherits the excellent performance of "not loosening" and "following" from previous models, with a rust-resistant finish. It is resistant to vibration and can withstand significant force with low torque tightening. The patented Magic Ring utilizes the principle of a wedge to tighten bolts, providing a powerful anti-loosening effect. Newly developed for M8 bolts for metal and wood! In the case of wood, it follows the natural contraction of the wood. The rust-resistant Taitonic features an environmentally friendly, completely chrome-free plating process. 【Features】 ■ Can now be used for metal connections! ■ Suitable for outdoor use ■ Tightens while following the contraction of wood ■ Converts vibration into tightening force with patented technology ■ Withstands significant force with low torque tightening 【Applications】 Connection and fixation of structures Vibration countermeasures for machine tools Fixing of ship lighting fixtures Fixing of connections in outdoor facilities Fixing of equipment installed outdoors that generates vibration Fixing of connections in wood that contracts over time 【Other Applications】 - Benches and fences (vibration suppression/fixing) - Structures exposed to rain (fixing of joints) *For more details, please feel free to contact us.

  • Other store equipment and supplies
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  • Earthquake-resistant construction method

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