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Washer Product List and Ranking from 38 Manufacturers, Suppliers and Companies

Last Updated： Aggregation Period:Sep 24, 2025～Oct 21, 2025
This ranking is based on the number of page views on our site.

Washer Manufacturer, Suppliers and Company Rankings

Last Updated： Aggregation Period:Sep 24, 2025～Oct 21, 2025
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 由良産商株式会社　特販部　特販課 Osaka//Machine elements and parts
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Washer Product ranking

Last Updated： Aggregation Period:Sep 24, 2025～Oct 21, 2025
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. Stainless steel spacer with hex male and female screws, including spring washers and small flat washers. ウィルコ
  4. Seal washer <capable of sealing fluids strongly> サンワ・アイ
  5. 4 Flat seat gold 300HV 由良産商株式会社　特販部　特販課

Washer Product List

1～15 item / All 82 items

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Anti-loosening washer (NORD-LOCK)

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

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Steel flat washers, trivalent chromate black.

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

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Iron spring washer No. 2, trivalent chromate black.

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

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

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

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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.

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

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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

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

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Stainless steel spring washer No. 2

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

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

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

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Aluminum flat washer

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

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

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

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Stainless Steel Special Size Flat Washer

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

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

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

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Aluminum special-sized flat washer (flat washer)

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

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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 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

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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 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.

  • 図2.png
  • bolt
  • nut
  • Spring

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