We have compiled a list of manufacturers, distributors, product information, reference prices, and rankings for Washer.
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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

76～82 item / All 82 items

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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 combination with screw part strength classification 10.9 (JIS B 1061:2020) ■ Marked with hardness classification 300HV ■ Compatible with mill sheets and inspection certificates *For more details, please refer to the PDF document or feel free to contact us.

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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 offer 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 use with screw part strength classification 10.9 (JIS B 1061:2020) ■ Marked with hardness classification 300HV ■ Compatible with mill sheets and inspection certificates *For more details, please refer to the PDF document or feel free to contact us.

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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 is compatible with water, oil, and air, capable of withstanding 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 document or feel free to contact us.

  • nut

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[Research Material] World Market for Metal Flat Washers

[Research Material] World Market for Metal Flat Washers

Global Market for Metal Flat Gold: Steel, Stainless Steel, Automotive, Electronics, Machinery, Construction, Others

This research report (Global Metal Plain Washer Market) investigates and analyzes the current state and outlook for the global metal plain washer market over the next five years. It includes information on the overview of the global metal plain washer market, trends of major companies (sales, selling prices, market share), market size by segment, market size by major regions, and distribution channel analysis. The segments by type in the metal plain washer market include steel, stainless steel, and others, while the segments by application cover automotive, electronics, machinery, construction, and others. The regional segments are divided into North America, the United States, Europe, Asia-Pacific, Japan, China, India, South Korea, Southeast Asia, South America, the Middle East, and Africa to calculate the market size of metal plain washers. It also includes the market share of major companies in the metal plain washer sector, product and business overviews, and sales performance.

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Seal washer <Prevention of gas and liquid leakage>

Seal washer <Prevention of gas and liquid leakage>

The design makes it difficult for the rubber to protrude even when tightening to the proper torque! It seals the fluid at the sides.

At Sanwa Ai, 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. Designed to minimize rubber overflow even under proper torque tightening, we use SUS304, which is resistant to rust, as the standard material. The packing options available are NBR (standard specification), silicone, fluororubber, and EPDM. 【Features】 - Suitable for preventing gas and liquid leakage - Passed pressure test of 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 - Metal and rubber packing do not resonate with vibrations *For more details, please refer to the PDF materials or feel free to contact us.

  • nut

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Seal washer <capable of sealing fluids strongly>

Seal washer <capable of sealing fluids strongly>

Introducing a washer that deeply embeds the rubber packing into the threaded part of the bolt, providing a strong seal for fluids!

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. We use SUS304, which is resistant to rust, as the standard material, and we offer packings made of NBR (standard specification), silicone, fluororubber, and EPDM. 【Features】 ■ Suitable for preventing gas and liquid leakage ■ Passed pressure tests of 200 atmospheres (20 MPa) ■ Provides sufficient performance even when used directly on the surfaces of black steel and cast iron ■ Vibration damping and sound insulation 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.

  • nut

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Washer (Washer) [Thin Plate] [Metal] [Press Processing] [Mold]

Washer (Washer) [Thin Plate] [Metal] [Press Processing] [Mold]

We undertake the manufacturing of washers. Precision press processing and precision molds.

Washers used for screw components They are basic parts, but they are not standard products and may sometimes be custom-made to fit specific products. Our company, which specializes in precision machining and pressing, provides a stable supply of washers with minimal burrs.

  • fastener

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