Locking nut Product List and Ranking from 9 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.

Locking nut 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. ハードロック工業 Osaka//others
  2. 西日本高速道路エンジニアリング関西 Osaka//Construction Consultant
  3. 東京衡機エンジニアリング Tokyo//Building materials, supplies and fixtures manufacturers
  4. 大阪フォーミング Osaka//Building materials, supplies and fixtures manufacturers
  5. 5 紀州ファスナー Osaka//Building materials, supplies and fixtures manufacturers
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Locking nut 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. [Technical Information] Troubles Caused by Loosening: What is Bolt Failure? ハードロック工業
  2. Locking nut "Smart Hyper Road Nut" 東京衡機エンジニアリング
  3. [Technical Information] How to detect looseness? (Yunker Test) ハードロック工業
  4. New mechanism's locking nut 'NEW Lock Nut' 西日本高速道路エンジニアリング関西
  5. 4 Locking nut "V Nut" [Can be used directly on the bolt in use] 紀州ファスナー

Locking nut Product List

16～30 item / All 66 items

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Technical Information: Design of Fastened Joints

Technical Information: Design of Fastened Joints

How should the bolts of a fastening assembly be designed? Here are some design methods.

The technical information site "Screw Fastening Technology Navigation," which contributes to solving issues related to screw fastening that our company operates, introduces the "design of screw fastening bodies." It explains the design methods for a bolt fastening body that connects two hollow cylinders with a single bolt and nut. We provide detailed explanations with diagrams and formulas on how to design the bolt to meet specific conditions and the design policies for each condition. Please take a look at the related links. [Contents] ■ How should the bolts of screw fastening bodies be designed? ■ What is the internal force coefficient Φ? *For more details, please feel free to contact us.

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[Technical Information] Basic Knowledge of Understanding Looseness: What is Torque and Axial Force Management?

[Technical Information] Basic Knowledge of Understanding Looseness: What is Torque and Axial Force Management?

How to determine the necessary tightening torque to manage the appropriate axial force! Introducing a simple calculation formula.

When fixing the joined components, the types of fastening screws include bolts and nuts. Axial force refers to the force that pulls the bolt in the axial direction when the bolt is tightened, causing the bolt tightening area to stretch slightly. The reactive force that attempts to return to its original state during this process is the axial force. If the axial force is not within the appropriate range, it can lead to loosening or cause the joined components to break, making daily management of proper tightening torque and axial force crucial. Now, to determine the necessary tightening torque for managing the appropriate axial force, it can be calculated using a simple formula. We provide detailed information on this in our technical information site "Screw Fastening Technology Navi," which contributes to solving screw fastening challenges, so please check it out through the related link. *For more details, please feel free to contact us.

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[Technical Information] Principle of Inclined Plane (in the case of a screw)

[Technical Information] Principle of Inclined Plane (in the case of a screw)

We will solve various issues related to agreements together with our users! Here, we introduce the principle of slopes in the case of angle screws.

In the tightening of screws, when torque is applied to the nut while the bolt is under axial force, the relationship between the bolt axial force and the torque applied to the nut is derived as an application of the "principle of the inclined plane." On our technical information site "Screw Fastening Technology Navi," which contributes to solving issues related to screw fastening, we provide detailed explanations of the principle of the inclined plane in the case of square screws, using diagrams and other materials. Please take a look from the related links. *For more details, feel free to contact us.

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[Technical Information] About "Mechanical Properties"

[Technical Information] About "Mechanical Properties"

An overview of "mechanical properties," the general term for the mechanical characteristics possessed by metallic materials!

"Mechanical properties" refers to the collective term for the mechanical characteristics possessed by metallic materials, with tensile strength, elongation, reduction of area, hardness, and impact value being representative examples. Our technical information site, "Screw Fastening Technology Navi," which contributes to solving issues related to screw fastening, provides detailed information on typical mechanical properties using diagrams and tables. Please take a look through the related links. [Contents] ■ What are mechanical properties? - Tensile testing and stress-strain diagrams - Reduction of area, hardness, impact value - Relationship between tensile strength and hardness ■ Typical mechanical properties - Steel materials - Non-ferrous metals *For more details, please feel free to contact us.

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[Technical Information] About Steel Materials "Basic Edition"

[Technical Information] About Steel Materials "Basic Edition"

Introduction to the basics of steel materials and heat treatment! Our company helps solve problems with a wide range of approaches.

The technical information site "Screw Fastening Technology Navi," which contributes to solving challenges in screw fastening that our company operates, introduces steel materials. As the basics of steel materials, it includes topics such as "the difference between ferrous and non-ferrous," "what carbon steel is," and "manufacturing methods," presented with diagrams and tables. Please take a look through the related links. 【Content Overview】 ■ Basics of Steel Materials 　・Difference between Ferrous and Non-Ferrous 　・What is Carbon Steel 　・Manufacturing Methods ■ About Heat Treatment 　・Basic Heat Treatment 　・Microstructural Changes Due to Heat Treatment ■ Major Steel Materials *For more details, please feel free to contact us.

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[Technical Information] Regarding Metal Damage: "Fatigue Fracture"

[Technical Information] Regarding Metal Damage: "Fatigue Fracture"

Evaluation of fatigue characteristics and concepts of fatigue strength safety design! Detailed introduction using diagrams.

Fatigue fracture is a failure phenomenon that occurs suddenly and without warning under conditions where a constant load is applied repeatedly, and it can also occur with variable loads. On our technical information site "Screw Fastening Technology Navigation," which contributes to solving issues related to screw fastening, we provide detailed information about metal damage known as "fatigue fracture." Please take a look through the related links. [Contents] ■ What is fatigue fracture? - Evaluation of fatigue characteristics - Factors that change fatigue characteristics - Fatigue mechanisms ■ Characteristic fracture surfaces of fatigue fracture - Beach marks - Striation patterns ■ Concepts of fatigue strength safety design *For more details, please feel free to contact us.

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Locking nut "SU-NUT"

Locking nut "SU-NUT"

Locking nut + theft prevention + tamper-proof nut

"SU-NUT" is a safety and security lock nut adopted in outdoor facilities such as mega-solar plants. Recently, we have received inquiries to protect equipment from theft and natural disasters at important facilities around the world, including the mega-solar plants being built across the country. The "SU-NUT" features a unique design that enhances visual security deterrence while requiring a special socket for installation and removal, making it impossible to use standard sockets or wrenches. The management of the special socket is handled by Fuji Precision Co., Ltd., and we provide it for free to customers after signing a "memorandum." 【Features】 - Protects your valuable assets - Equivalent functionality and quality to U-NUT - Simply replace the nuts you are currently using - Easy to use, requiring only a special socket as a tool For more details, please contact us or download the catalog.

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Locking nut "BLU-NUT"

Locking nut "BLU-NUT"

Locking function + one-sided fastening method nut

"BLU-NUT" is a research and development product that incorporates the functionality of a U-NUT into a blind nut. Based on feedback from everyone, we have integrated Fujiseimitsu Co., Ltd.'s U-NUT technology into the blind nut. We believe that this "BLU-NUT" will lead to further improvements in our customers' work efficiency and cost management. 【Features】 ○ Reduces the time and effort required for complicated pre-process tasks ○ Simple operation that can be tightened with a riveter or nut driver ○ Contributes to overall cost reduction ○ Reduces the number of parts, making management easier ○ Equipped with measures to prevent nut rotation and bolt seizure For more details, please contact us or download the catalog.

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Locking nut "Small U-NUT"

Locking nut "Small U-NUT"

To reduce the workspace! Tools can be shared, making work more efficient.

The "Small U-NUT" is a nut that has a width across two opposite faces that is one rank smaller than that of a standard nut for the same nominal diameter. This product allows for weight reduction of the nut. Additionally, it enables a reduction in workspace. Furthermore, it allows for the sharing of tools, contributing to increased work efficiency. 【Features】 ■ Width across two opposite faces is one rank smaller than that of a standard nut for the same nominal diameter ■ Weight reduction of the nut ■ Reduction in workspace ■ Tools can be shared ■ Increased work efficiency *For more details, please refer to the PDF document or feel free to contact us.

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Locking nut "Flange U-NUT"

Locking nut "Flange U-NUT"

Reduce the process of fitting washers! Improve aesthetics with a design integrated with the flange.

The "Flange U-NUT" is a locking nut that reduces the process of fitting washers, thereby improving work efficiency. This product helps reduce management supplies. Additionally, the seating surface is stable, and fastening performance is enhanced. The integrated design with the flange improves aesthetics. 【Features】 ■ Increases work efficiency ■ Reduces management supplies ■ Stable seating surface ■ Enhanced fastening performance ■ Integrated design with flange *For more details, please refer to the PDF document or feel free to contact us.

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Locking nut "Weld U-NUT"

Locking nut "Weld U-NUT"

Fastening by screwing in the bolt! Projection type nut.

The "Weld U-NUT" is a projection-type nut. It is fastened by screwing in a bolt. There are examples of its use in automotive armrests, automotive seat frames, and motorcycle center stands. 【Specifications (excerpt)】 ■ Nominal diameter (d): M5 ■ Pitch (p): 0.8 ■ Width across flats (s): Standard dimension/9, Tolerance/0-0.36 ■ Overall height (h): Standard dimension/3.0, Tolerance/±0.3 ■ Thread height (m): Approximately 2.3 ■ Weight (g): Approximately 1.2 *For more details, please refer to the PDF document or feel free to contact us.

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Locking nut "Wit U-NUT"

Locking nut "Wit U-NUT"

Compatible with the old British standards commonly used in construction and plumbing!

The "Wit U-NUT" is a lock nut with a thread angle of 55°. It complies with the old British standards commonly used in construction and plumbing. Additionally, we also offer the "Unify U-NUT," which meets the standards of the United States, the United Kingdom, and Canada. 【Features】 ■ Thread angle is 55° ■ Complies with the old British standards commonly used in construction and plumbing *For more details, please refer to the PDF document or feel free to contact us.

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HEX U-Nut adopted for Tokyo Skytree

HEX U-Nut adopted for Tokyo Skytree

U-NUT (stainless steel) is used in the curtain wall of Tokyo Skytree.

The U-NUT, synonymous with locking nuts, continues to evolve not only in terms of its locking performance but also in durability and vibration resistance. Here are some examples of the U-NUT locking nut being implemented. 【Case Overview】 ■ Application Location - Tokyo Skytree (Curtain Wall) ■ Product Used - HEX U-Nut (Stainless Steel) ■ Reasons for Adoption - Locking function, simplification of on-site construction, reduction in the number of components ■ Other Features - Can be fastened in limited spaces *For more details, please refer to the PDF document or feel free to contact us.

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Adoption of 'HEX U-Nut' in hydraulic excavators

Adoption of 'HEX U-Nut' in hydraulic excavators

U-NUT treated with S45C is used in the caterpillar of hydraulic excavators.

The U-NUT, synonymous with locking nuts, continues to evolve not only in its locking performance but also in terms of durability and vibration resistance. Here are some examples of the U-NUT locking nut being implemented. 【Case Overview】 ■ Adoption Location - Hydraulic Excavator (Caterpillar) ■ Adopted Product - HEX U-Nut (S45C) ■ Reason for Adoption - Locking function ■ Other Features - High strength and excellent availability *For more details, please refer to the PDF document or feel free to contact us.

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Single lock nut for securing auxiliary facilities (old registration)

Single lock nut for securing auxiliary facilities (old registration)

By introducing the standalone locking nut "U-NUT," we have confirmed an improvement in fastening work efficiency, contributing to a reduction in construction days and maintenance costs!

"U-NUT" is a locking nut that excels in various industries, from railway and bridge steel structures to cars, motorcycles, and industrial machinery. No matter how harsh the usage environment, this product, which demands safety and reliability, continues to evolve not only in its locking performance but also in durability and vibration resistance. 【Features】 ■ Fastening Function: Provides stable locking performance ■ Drop Prevention: Prevents early drop even when axial force decreases ■ Reusability: Can be reused ■ Easy Fastening: No need for skilled techniques or specialized tools ■ Standalone Component: Simplifies parts management and prevents installation errors ■ Heat and Cold Resistance: All-metal product with excellent heat and cold resistance *NETIS Registration No. KT-130064-VE New Technology Name "U-Nut" 【Customer Feedback】 By using U-NUT for securing shackles, we were able to eliminate the need for the traditional process of crushing screw threads, confirming improved fastening work efficiency. This led to a reduction in construction days and maintenance costs. *For more details about "U-NUT," please download the PDF or feel free to contact us.

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