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Washer×特殊発條興業 (トクハツ) - List of Manufacturers, Suppliers, Companies and Products

Washer Product List

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

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

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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.

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

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Cost reduction by converting "forged + machined" parts to "stamped processing"!

Cost reduction by converting "forged + machined" parts to "stamped processing"!

Through VA proposals by changing construction methods, we have achieved a 30% cost reduction while reducing sag! *Case studies available as a gift.

In conventional press processing, such as bar rolling, significant thinning occurs in the drawn parts. At Tokuhatsu, we have reduced thinning by controlling the flow of material during the pressing process. At Tokuhatsu, we can help solve the following concerns: - Securing seating area: We want to maximize the seating area to reduce surface pressure. - High precision is required for the bar rolling diameter. - Costs are increasing due to forging and cutting. *For more details, please refer to our catalog or feel free to contact us.*

  • Axle parts

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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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Reduce labor and costs! Press processing as an alternative to cutting processing [thickening processing].

Reduce labor and costs! Press processing as an alternative to cutting processing [thickening processing].

Control the flow of material during press molding! Achieve reduced sagging and cost reduction!

At Special Spring Industry, which has contributed to the development of various industries by supplying a wide range of spring products, including various types of washers, we are proposing VA (Value Analysis) through a method transition to press processing. In the case of existing products, due to significant deformation occurring at the burring section during conventional press processing, we had been using a method of "hot forging + cutting." By controlling the flow of material during the press forming process, we have achieved a reduction in deformation. This allows us to maximize the seating area and successfully lower the surface pressure. 【VA Proposal Example】 ■ Method: Forging + Cutting Parts → Press Processing ■ Product Name: Retainer ■ Application: Washer for ball bush fastening *For more details, please refer to our catalog or feel free to contact us.

  • Axle parts

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