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Washer Product List and Ranking from 39 Manufacturers, Suppliers and Companies | IPROS GMS

Last Updated: Aggregation Period:Feb 04, 2026~Mar 03, 2026
This ranking is based on the number of page views on our site.

Washer Manufacturer, Suppliers and Company Rankings

Last Updated: Aggregation Period:Feb 04, 2026~Mar 03, 2026
This ranking is based on the number of page views on our site.

  1. オータ Tokyo//Machine elements and parts
  2. null/null
  3. ウィルコ Kanagawa//Industrial Machinery
  4. 4 サンワ・アイ Osaka//Manufacturing and processing contract
  5. 5 東京メタル Kanagawa//Machine elements and parts

Washer Product ranking

Last Updated: Aggregation Period:Feb 04, 2026~Mar 03, 2026
This ranking is based on the number of page views on our site.

  1. Basic Knowledge of Screw Products: What are the differences between the old JIS and new JIS for flat washers? オータ
  2. Disc spring / washer
  3. YOSHER Locking Washer 東京メタル
  4. 4 Stainless steel spacer with hex male and female screws, including spring washers and small flat washers. ウィルコ
  5. 5 For connecting and securing metal and wood, use a tightonic that is non-loosening and rust-resistant. ティ・カトウ 本社

Washer Product List

1~30 item / All 83 items

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Anti-loosening 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. The wedge effect created by the cam surfaces prevents 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.

  • bolt
  • nut
  • Washer

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Steel flat washers, trivalent chromate black.

Iron flat washer, trivalent chromate black.

When the hole diameter of the material being fastened is larger than that of the screw, it can stabilize the screw head. By increasing the surface area of the screw head, it enhances the adhesion with the material. It is also referred to as a washer or flat washer. This product is compliant with EU-RoHS.

  • nut
  • Washer

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Iron spring washer No. 2, trivalent chromate black.

Iron spring washer No. 2, trivalent chromate black.

This is a general-purpose (Type 2) product that meets JIS standards. It is said that the spring washer exerts a repulsive force that presses the screw head and the mating material together, making it difficult for the screw and nut to come loose. It is also referred to as a spring washer. This product is compliant with EU-RoHS regulations.

  • nut
  • Washer

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Stainless steel + small pot screws with spring washers and small diameter flat washers.

Stainless steel + small pan screw with spring washer and small diameter flat washer.

A washer is incorporated into the screw. Since the washer does not come off the screw, it saves the trouble of setting the washer and improves work efficiency. It is also referred to as a Sems screw. It is compliant with EU-RoHS standards.

  • bolt
  • Washer

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Stainless steel + small pot screws with spring washers and large flat washers included.

Stainless steel + small pot screws with spring washers and large flat washers included.

A washer is incorporated into the screw. Since the washer does not come off the screw, it saves the effort of setting the washer and improves work efficiency. It is also referred to as a Sems screw. It is compliant with EU-RoHS standards.

  • bolt
  • Washer

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Stainless Steel Hex Bolt with Full Thread, Spring Washer and Large Flat Washer Included

Stainless Steel Hex Bolt with Full Thread, Spring Washer and Large Flat Washer Included

The head shape is hexagonal, allowing for tightening with tools such as wrenches and spanners. It can be tightened more securely than screws with a cross hole. Since the washer does not come off the screw, it saves the trouble of setting the washer, thereby improving work efficiency. It is also referred to as a Sems screw. It is compliant with EU-RoHS standards.

  • bolt
  • Washer

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Stainless steel spring washer No. 2

Stainless steel spring washer No. 2

This is a general-purpose (Type 2) product that meets JIS standards. It is said that the spring washer exerts a repulsive force that presses the head of the screw and the mating material together, making it difficult for the screw and nut to come loose. It is also referred to as a spring washer. This product is compliant with EU-RoHS regulations.

  • nut
  • Washer

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Stainless steel spacer with hex male and female screws, including spring washers and small flat washers.

Stainless Steel 303 Spacer with Hex Male and Female Screws, Includes Spring Washer and Small Flat Washer, Degreased

This is a hexagonal column spacer with a male thread on one side and a female thread on the other, incorporating a spring washer and a flat washer on the male thread side. The washer does not come off the screw, which eliminates the hassle of setting the washer and improves work efficiency. It has excellent chemical resistance and high strength. It is mainly used for fixing stacked electronic circuit boards. It is compliant with EU RoHS standards.

  • nut
  • Washer

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Aluminum flat washer

Aluminum flat washer

When the hole diameter of the material being fastened is larger than that of the screw, it can stabilize the screw head. By increasing the surface area of the screw head, the adhesion with the material can be enhanced. It is also referred to as a washer or flat washer. This product is compliant with EU-RoHS standards.

  • nut
  • Washer

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Iron special size flat seat washer (flat washer) / black baked finish

Outer diameter and thickness can be selected! Iron special-sized flat washers (flat washers) / black baked finish.

This is a "special-sized flat washer" series developed to allow a wide selection of outer diameter and thickness compared to conventional flat washers. It stabilizes the screw head when the hole diameter of the material being tightened is larger than the screw. By increasing the surface area of the screw head, it enhances the contact with the material. It is also referred to as a washer or flat washer. It is compliant with EU-RoHS standards.

  • nut
  • Washer

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Stainless Steel Special Size Flat Washer

Outer diameter and thickness can be selected! Stainless steel special flat washers (flat washers)

This is the "special-sized flat washer (flat washer)" series developed with a wide range of options for outer diameter and thickness compared to conventional flat washers. It can stabilize the screw head when the hole diameter of the material being tightened is larger than the screw. By increasing the surface area of the screw head, it enhances the contact with the material. It is also referred to as a washer or flat washer. It is compliant with EU-RoHS standards.

  • nut
  • Washer

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Stainless Steel 304 Custom Flat Washer (Flat Washer) / Black Coating Treatment

Outer diameter and thickness can be chosen! Stainless Steel 304 custom flat washers (flat washers) / black baked finish.

This is a "special size flat washer" series developed to allow a wide selection of outer diameter and thickness compared to conventional flat washers. It stabilizes the screw head when the hole diameter of the material being tightened is larger than the screw. By increasing the surface area of the screw head, it enhances the contact with the material. It is also referred to as a washer or flat washer. It is compliant with EU-RoHS standards.

  • nut
  • Washer

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Aluminum special-sized flat washer (flat washer)

Custom-sized flat washers (flat washers) made of aluminum with selectable outer diameter and thickness!

This is the "special-sized flat washer" series developed to allow a wide selection of outer diameter and thickness compared to conventional flat washers. When the hole diameter of the material being fastened is larger than that of the screw, it can stabilize the screw head. By increasing the surface area of the screw head, it enhances the contact with the material. It is also referred to as a washer or flat washer.

  • nut
  • Washer

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Stainless steel (black dye processing) + small pan screws with spring washers and small diameter flat washers included

Stainless steel (black dye processing) + small pan screw with spring washer and small diameter flat washer included.

This is a pan head screw with a cross recess that incorporates a spring washer and a small diameter flat washer. It is made of iron and has a high corrosion-resistant black coating (Sabinai-jan). The washer does not detach from the screw, which eliminates the hassle of setting the washer and improves work efficiency. It is also referred to as a Sems screw. It complies with EU-RoHS2 standards. - High corrosion-resistant black coating (Sabinai-jan) refers to a black-dyed stainless steel that forms a black film on the surface of the metal, providing high corrosion resistance. In rust resistance durability tests (salt spray), typical black dyeing lasts for 72 hours, while high corrosion-resistant black dyeing (Sabinai-jan) exceeds 3000 hours. It is suitable for outdoor use and may be used as a countermeasure against salt damage in coastal areas and snow removal regions. Usage: Construction, outdoor use, automotive, etc.

  • bolt
  • Washer

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

For preventing loosening of high-strength stainless steel!

High-strength fasteners made of stainless steel efficiently convert high input into spring action without waste, and reliably suppress 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 used with confidence even in harsh environments where corrosion resistance is required.

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Seal washer

Expect vibration damping and noise reduction 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-drawn 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 rubber overflow 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 tests up to 200 atmospheres (20 MPa) ■ Demonstrates sufficient performance even when used directly on the surface 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.

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Slack Prevention Bolt, Nut, Washer 'ActiveX'

Achieves a skirt shape that does not sag. It is reusable and can also reduce costs.

"ActiveX" is a bolt, nut, and washer that realizes high anti-loosening functionality with a simple shape, based on the concept of "absorbing the force that loosens screws." The spring effect generated by the elastic deformation of the skirt section absorbs vibrations and shocks, demonstrating its anti-loosening effect. According to the NAS3350 standard, vibration tests were conducted using JQA's high-speed screw loosening testing machine, resulting in a finding that it does not loosen for 17 minutes. 【Features】 ■ The spring effect generated by the elastic deformation of the skirt section absorbs vibrations and shocks. ■ Special shape for full contact of the seating surface. ■ Excellent reusability, allowing for cost reduction. ■ Passed vibration tests under the NAS3350 standard for 30,000 cycles (17 minutes). *For more details, please refer to the PDF document or feel free to contact us.

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Flat seat gold 300HV

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

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. 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 combination with screw part 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.

  • Other machine elements
  • Washer

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Adjustment Seat Gold "SWA-AW" <Steel - Ferric Oxide Coating>

For adjusting cumulative errors during assembly, as a color spacer!

We would like to introduce our steel-made adjustment washers with a ferric oxide coating, 'SWA-AW'. These washers offer a wide variety of outer diameters and thicknesses compared to standard flat washers. They are suitable for securing materials with low limit surface pressure, such as aluminum and resin, while ensuring a stable seating surface in elongated holes. Additionally, we also offer adjustment washers (steel, electroless nickel-plated) 'SWA-AWEL' and adjustment washers (stainless steel) 'SWAS-AW'. 【Product Lineup (Partial)】 ■SWA-2-8-AW ■SWA-3-8-AW ■SWA-3-10-AW ■SWA-3-12-AW ■SWA-3-15-AW *For more details, please download the PDF or feel free to contact us.

  • Other machine elements
  • Washer

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Panel Protection Bracket 'FPW' <Steel>

Compatible with pan head screws with cross recess according to JIS B 1111 and pan head bolts with hexagon socket according to JIS B 1194!

We would like to introduce our steel panel protection washers, 'FPW'. These washers are designed to prevent cracking and scratching of panels, such as acrylic, when securing them with pan head screws by distributing the tightening load. We also offer aluminum 'FPWA' and stainless steel 'FPWS' options. Please feel free to contact us for any inquiries. 【Product Lineup】 ■FPW-4-3.5 ■FPW-4-5.5 ■FPW-5-3.5 ■FPW-5-5.5 ■FPW-6-3.5 ■FPW-6-5.5 *For more details, please download the PDF or feel free to contact us.

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  • 18c.png
  • Other machine elements
  • Washer

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Introduction of Washer from Neji Super

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

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

  • Other services
  • stainless
  • Other metal materials
  • Washer

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FXZ8-FXZ24 Large Spherical Seat Gold Super Tool

FXZ8-FXZ24 Large Spherical Seat Gold Super Tool

Large Spherical Washer FXZ SPHERIC WASHER Super Tool - Material: S45C - Heat Treatment: Hardness HRC 35-45 - Finish: Black Oxide

  • Vice Clamps
  • Other work tools
  • Washer

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10MSW-24MSW Spherical Seat Gold Super Tool

10MSW-24MSW Spherical Seat Gold Super Tool

Spherical Washer SW SPHERCAL WASHER Super Tool - Material: S45C - Heat Treatment: Hardness HRC 27-35 - Finish: Black Oxide

  • Vice Clamps
  • Other work tools
  • Washer

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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 vibrations. Tightonic prevents misalignment at joints. 【Features】 ○ The internal spring pulls the bolt, and the magic ring tightens the bolt, preventing loosening. ○ The wedging effect of the magic ring creates a unified structure between the bolt and washer, preventing misalignment. (The base does not shift either) ○ Easy one-touch installation! ○ Compatible with impact wrenches. ● For other functions and details, please download the catalog.

  • Other safety and hygiene products
  • Washer

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Bolt-related products - Washers

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

Products related to screws and nuts 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 the catalog.

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Seal washer (washer) [*Can be used with various screw shapes!]

Blocks water, oil, and air! Widely applicable for outdoor equipment, underwater devices, medical devices, and more!

We would like to introduce our original metal product, the "Seal Washer." It excels in oil resistance, heat resistance, and weather resistance, preventing the ingress of water, oil, and air when the screw is tightened, thanks to the rubber's tight fit. We particularly recommend the thick body for outdoor use. 【Features】 ○ Can be used with various screw shapes (except for flat screws) ○ Excellent oil resistance, heat resistance, and weather resistance ○ Can be used even with large countersinks due to its wide seating surface (refer to the size chart) ○ The rubber tightly adheres when the screw is tightened, preventing the ingress of gases and liquids (the tightening torque depends on the strength classification of each size) ○ Can be reused repeatedly as long as there is no damage to the rubber ○ Especially recommended for outdoor use is the thick body For more details, please contact us or download the catalog.

  • Other machine elements
  • Washer

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Spring washer, SW No. 2, No. 3 for individual use and for assembly use.

Initial loosening prevention for screw fastening parts: spring washers, SW No. 2, No. 3, equivalent to JIS B1251. Please consult us for custom sizes.

SW No. 2 and No. 3, produced in-house with domestic materials. Spring washers manufactured at the latest smart factory, Mita Plant, which started operations in 2015. Spring washers - SW No. 2 and No. 3, equivalent to JIS B1251. Custom sizes are also available upon request. *For more details, please refer to the catalog or feel free to contact us.*

  • Spring
  • Axle parts
  • Other Auto Parts
  • Washer

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Farewell spring washer, spring washer JIS B1251 equivalent to Type 1 and Type 2.

Farewell spring washer, spring washer JIS B1251 equivalent to type 1 and type 2, for screw and bolt manufacturers, with agents available, custom sizes can also be accommodated.

Goodbye spring washers, spring washers equivalent to JIS B1251 Type 1 and Type 2, special sizes also available. For screw and bolt manufacturers, spring washers equivalent to JIS B1251 Type 1 and Type 2, with agents available, special sizes (high precision, improved flatness, surface roughness) also available. *For more details, please refer to the catalog or feel free to contact us.

  • Spring
  • Axle parts
  • Other Auto Parts
  • Washer

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