We have compiled a list of manufacturers, distributors, product information, reference prices, and rankings for Flat washer.
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Flat washer Product List and Ranking from 8 Manufacturers, Suppliers and Companies

Last Updated： Aggregation Period:Sep 17, 2025～Oct 14, 2025
This ranking is based on the number of page views on our site.

Flat washer Manufacturer, Suppliers and Company Rankings

Last Updated： Aggregation Period:Sep 17, 2025～Oct 14, 2025
This ranking is based on the number of page views on our site.

  1. 由良産商株式会社　特販部　特販課 Osaka//Machine elements and parts
  2. ウィルコ Kanagawa//Industrial Machinery
  3. サンワ・アイ Osaka//Manufacturing and processing contract
  4. 藤川伝導機 Tokyo//Industrial Machinery
  5. 特殊発條興業 (トクハツ) Hyogo//Machine elements and parts
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Flat washer Product ranking

Last Updated： Aggregation Period:Sep 17, 2025～Oct 14, 2025
This ranking is based on the number of page views on our site.

  1. Flat seat gold 300HV 由良産商株式会社　特販部　特販課
  2. Stainless Steel Special Size Flat Washer ウィルコ
  3. Flat seat gold 300HV サンワ・アイ
  4. Hex Nut and Flat Washer 'SHN-GJ/SWA-F-GJ' 藤川伝導機
  5. 4 Flat washers for high-strength bolts. 特殊発條興業 (トクハツ)

Flat washer Product List

16～20 item / All 20 items

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Flat washers for high-strength bolts.

Flat washers for high-strength bolts.

Flat washers, washers for high-strength bolts, can be customized to special sizes, high precision [improved flatness and surface roughness], and we can propose solutions to prevent rotation.

Special Washers Flat washers, washers for high-strength bolts, and custom sizes are available. High precision [improved flatness and surface roughness] and proposals to prevent rotation can be provided. "Flat washers" are handled by Special Spring Industry Co., Ltd., which manufactures and sells thin plate springs, washers, functional springs, and more. Our products are used as flat washers for high-strength bolts and in automotive suspension systems. They reduce seating pressure and prevent loosening due to sinking. 【Features】 ■ Used for flat washers for high-strength bolts, etc. ■ Reduces seating pressure ■ Prevents loosening due to sinking *For more details, please refer to the catalog or feel free to contact us.

  • Spring
  • Axle parts
  • Other Auto Parts

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Basic Knowledge of Screw Products: What are the differences between the old JIS and new JIS for flat washers?

Basic Knowledge of Screw Products: What are the differences between the old JIS and new JIS for flat washers?

The names have been divided into old and new because the dimensions have changed slightly over the years!

Originally, flat washers were created based on the international standard ISO 7089 to establish JIS B 1256. Although it remains JIS B 1256, the dimensions have gradually changed over the years, leading to the distinction between old and new versions. 【JIS B 1256: 1963】The so-called old JIS. If it is marked as "P=〇" in the SEMS, this refers to the dimensions of this flat washer. 【JIS B 1256: 1978】The so-called new JIS. Generally, it is often referred to as "ISO." In SEMS, it is marked as "I=〇." 【Old JIS B 1256: 1998, JIS B 1256: 2008】These versions are currently not circulating in the market. *For more details, please refer to the related links. For further information, feel free to download the PDF or contact us.

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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.

  • Other machine elements

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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.

  • Other machine elements

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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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