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Two-wheeled vehicles

Retains locking effect even when reused for maintenance. The compact and thin FUJILOK U-NUT also reduces weight and save space.

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Four-wheeled vehicles

With its high locking effect, the FUJILOK U-NUT has the advantage of being maintenance-free and has a strong track record as a fastener fastening component inside motor vehicles.

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Special-equipped vehicles

The high-strength FUJILOK U-NUT is used in large quantities to withstand large external loads.

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Farm equipment

Can be easily fastened and removed without additional parts, is reusable, prevents fall-off, and improves work efficiency.

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Conveyers

With its stable locking function, it has excellent vibration resistance during operation and is effective in preventing fall-off.

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Railways

Highly resistant to vibration, preventing fall-off. Improves construction efficiency because it is a single unit that does not require additional components. Can be reused.

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Marine vessels

Not only does it have a stable locking function, but it has a strong track record of use due to its highly corrosion-resistant material.

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Plants

Its long-lasting locking function greatly reduces the frequency of maintenance.

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Machine tools

The FINE U-NUT eliminates the need for toothed washers and the keyway machining of shafts. Can reduce machine power consumption and save space.

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Industrial equipment

The FINE U-NUT eliminates the need for toothed washers and the keyway machining of shafts. Can reduce machine power consumption and save space.

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Electronics

Its stable locking function supports safety in our everyday lives. It also has excellent heat and cold resistance as well as high work efficiency, making it suitable for use in mass-produced products.

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Medical care and welfare

Its stable locking performance supports safety in our everyday lives. Using the thin version of the FUJILOK U-NUT also allows for weight reduction.

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Infrastructure

Highly resistant to vibration, preventing fall-off. Improves construction efficiency because it is a single unit that does not require additional components. Can be reused. Meets the performance standards of NEXCO companies and urban expressways in Japan.

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Civil engineering

Highly resistant to vibration, preventing fall-off. Improves construction efficiency because it is a single unit that does not require additional components. Can be reused. Meets the performance standards of NEXCO companies and urban expressways in Japan.

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Architecture

Its locking function eliminates the need for welding and other forms of post-processing. Improves work efficiency because it is a single unit that does not require additional components. Level adjustment work is also easy.

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Playground equipment

The FUJILOK U-NUT with cap protects the tip of the bolt to prevent accidents during contact. It also functions as a measure to create a more aesthetically pleasing appearance.

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Technical center

The FUJILOK U-NUT with cap protects the tip of the bolt to prevent accidents during contact. It also functions as a measure to create a more aesthetically pleasing appearance.

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Company

Click here for company information of Fuji Seimitsu, a comprehensive manufacturer of locking nuts that delivers safety and security with FUJILOK U-NUT・FINE U-NUT

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Technical center

For information on testing nuts and various parts, contact our Technical Center, which has various testing machines.

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Products

You can search for products here in addition to accessing basic information on our products such as the FUJILOK U-NUT, the first name in locknuts, and the FINE U-NUT.

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Market Examples

We will introduce examples of the use of FUJILOK U-NUT and FINE U-NUT, which have accumulated many achievements, by market.

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U's Cafe

Introducing the staff of Fuji Seimitsu, It is also a communication page with customers introducing timely articles and news.

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Documents Library

You can view various certificates related to catalogs and products.There is also a download page for product CAD data (2D/3D) for registered members only.

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What's New

  • 2023/08/17
    Information
    An announcement of recovery from the website server error
  • 2022/09/20
    Information
    Announcement of the opening of the “U-TOWN” FUJILOK U-NUT and FINE U-NUT product information site
List of news

U's Cafe Pickup

[Featured Article] Is it perfect? A look into the mystery of Fuji Seimitsu’s support system!

[Featured Article] A surprising lineup: What are Fuji Seimitsu's testing and measuring equipment?

[Featured Article] How to solve nut problems: Pay attention to the installation method!!

[Video] Rotational Life Test for FINE U-NUT

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    • FUJILOK U-NUT
    • FINE U-NUT
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Market Examples

  • Two-wheeled
    vehicles
  • Four-wheeled
    vehicles
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    vehicles
  • Farm
    equipment
  • Conveyers
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  • Marine
    vessels
  • Plants
  • Machine
    tools
  • Industrial
    equipment
  • Electronics
  • Medical care and
    welfare
  • Infrastructure
  • Civil
    engineering
  • Architecture
  • Playground
    equipment

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