株式会社冨士精密 List of Products and Services

The "U-NUT" is a locking nut that is active in various industries, from tunnels on roads and railways to steel structures such as skyscrapers and bridges, as well as in four-wheeled and two-wheeled vehicles and industrial machinery. Regardless of how harsh the usage environment may be, this product demands safety and reliability. It continues to evolve not only in terms of locking performance but also in durability and vibration resistance. 【Features】 ■ Fastening Function: Provides stable locking performance ■ Drop Prevention: Prevents early drop even if axial force decreases ■ Reusability: Can be reused ■ Easy Fastening: No need for skilled techniques or specialized tools ■ Individual Parts: Simplifies parts management and prevents installation errors ■ Heat and Cold Resistance: Fully metallic product with excellent heat and cold resistance 【Customer Feedback】 By using the U-NUT for securing shackles, we were able to eliminate the need for the traditional process of crushing screw threads, confirming an improvement in fastening work efficiency. This led to a reduction in construction days and maintenance costs. *For more details about the "U-NUT," please download the PDF or feel free to contact us.

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"U-NUT" is a locking nut that is active 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 if axial force decreases ■ Reusability: Can be reused ■ Easy Fastening: No need for skilled techniques or special tools ■ Standalone Component: Makes part management easier and prevents installation errors ■ Heat and Cold Resistance: Made of all-metal, excellent in heat and cold resistance * NETIS Registration No. KT-130064-VE (old registration) New technology name U-Nut * For more details, please refer to the PDF document or feel free to contact us.

• Tunnel Materials

The "Washer-equipped U-NUT" is a locking nut that accommodates loose holes and blind holes due to its large washer diameter. In response to requests from various sources, we have integrated a large washer into the hexagonal shape of the U-NUT. Since the nut, spring washer, and washer are all integrated, it reduces labor, improves work efficiency, and minimizes the risk of forgetting to install parts as well as the hassle of inventory management. 【Features】 〇 Galvanized (SS400) ○ Stainless steel products (SUS304) ○ No need for spring washers or flat washers ○ Usable with anchor bolts ○ Thread pitch is standard For more details, please contact us or download the catalog.

• Other civil engineering works

"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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The "CLIP U-NUT" is a specialized U-NUT designed to facilitate work in locations that are difficult to access or where hands cannot reach, such as the installation of soundproof walls on highways. By simply drilling holes in the components, there is no need for welding nuts or tapping screws. Additionally, the guide ring function makes positioning easy. The one-sided fastening method reduces the number of workers required and achieves a total cost reduction. 【Features】 ■ The clip fittings are compatible with the function of square washers. ■ Contributes to the simplification of work. ■ Reduces the number of parts. ■ Shortens construction time. *For more details, please refer to the PDF materials or feel free to contact us.

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The "FUN Coat" is a product that can prevent seizing, galling, sticking, and welding by applying it before tightening screws, bolts, and nuts. It has high permeability and lubricity, is light yellow and transparent, and can be used in various indoor and outdoor locations. It does not contain substances regulated by the RoHS and RoHS2 directives or REACH regulations, and it is an environmentally friendly product that is also not subject to the PRTR law. 【Examples of Use】 * Preventing seizing of bolts and nuts ◎ Civil engineering and construction work ◎ Machine tools ◎ Drive system parts (gears, bearings, etc.) * You can view the product information from "PDF Download." Please feel free to contact us with any inquiries.

• Unit and other construction

"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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The "Cap U-Nut" is a locking nut that covers the tip of the bolt with a cap to enhance aesthetics. It improves safety during contact with the bolt and protects the contacted objects, thereby addressing PL law measures. 【Features】 ■ Covers the tip of the bolt with a cap ■ Enhances aesthetics ■ Improves safety during contact with the bolt ■ Protects contacted objects ■ Addresses PL law measures *For more details, please refer to the PDF document or feel free to contact us.

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The "GU-NUT" is a locking nut that adopts a large 270° friction ring to meet the loosening prevention performance specified in JIS B1056, utilizing the friction ring of the "U-NUT." We have enhanced the loosening prevention performance, pursuing greater safety and peace of mind. It complies with JIS B1056 "Pre-Loading Torque Type Steel Hex Nut." 【Features】 ■ Complies with JIS B1056 "Pre-Loading Torque Type Steel Hex Nut" ■ The shape of the friction ring has been expanded to 270°, improving performance ■ As a high-torque type, the loosening prevention function is further enhanced ■ Prevents early detachment even if axial force decreases *For more details, please refer to the PDF document or feel free to contact us.

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The "Flange U-NUT (Stainless Steel)" is a locking nut that reduces the process of fitting washers, thereby improving work efficiency. The seating surface is stable, enhancing fastening performance. Additionally, it allows for a reduction in management supplies. Furthermore, the integrated design with the flange improves aesthetics. 【Features】 ■ Reduces the process of fitting washers ■ Enhances work efficiency ■ Allows for a reduction in management supplies ■ Stable seating surface ■ Improved fastening performance *For more details, please refer to the PDF document or feel free to contact us.

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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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The "Unify U-NUT" is a locking nut with a thread angle of 60°. It complies with the standards of the United States, the United Kingdom, and Canada, which are used in aviation and the automotive industry. Additionally, we also offer the "Wit U-NUT," which conforms to the old British standards commonly used in construction and plumbing. 【Features】 ■ Thread angle is 60° ■ Complies with the standards of the United States, the United Kingdom, and Canada *For more details, please refer to the PDF document or feel free to contact us.

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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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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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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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"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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"Is that sign or billboard wobbling?" 'U-NUT' is a loosening prevention nut that is installed in high places where loosening is likely to occur due to wind, and is used for various purposes in commercial facilities and buildings, such as advertising billboards, signs, hanging banners, bird damage prevention products, safety measures for window and balcony railings, carports, grates, and other equipment to prevent vandalism. No matter how harsh the usage environment, this product demands safety and reliability, continuously evolving not only in loosening prevention performance but also in durability and vibration resistance. 【Features】 ■ Fastening Function: Provides stable loosening prevention ■ 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 Parts: Facilitates parts management and prevents installation errors ■ Heat and Cold Resistance: All-metal product conforms to the inherent heat resistance temperature of the material *NETIS Registration No. KT-130064-VE New Technology Name U-Nut 【Standalone loosening prevention nut for fastening auxiliary facilities】 *For more details, please refer to the PDF document or feel free to contact us.

• Tunnel Materials

"U-NUT" is used in various disaster prevention and disaster response products that are subjected to wind pressure and water pressure, such as seismic reinforcement work for bridges, temporary road installation work, seismic devices and lightning rods for buildings, emergency generators, fire extinguishers, shutters, vibration parts of fire doors, parabolic antennas, mounting brackets for solar panels, stop wires for tetrapods, and installation brackets for marine buoys (markers). No matter how harsh the usage environment, "U-NUT" is sought after for safety and reliability, demonstrating excellent anti-loosening performance, fall prevention, and reusability, making it active in various industries. 【Features】 ■ Fastening Function: Exhibits stable anti-loosening functionality ■ Fall Prevention: Prevents early detachment even if axial force decreases ■ Reusability: Can be reused ■ Easy Fastening: No need for skilled techniques or specialized tools ■ Individual Components: Facilitates parts management and prevents installation errors ■ Heat and Cold Resistance: All-metal products conform to the inherent heat resistance temperature of the materials *For more details, please refer to the PDF document or feel free to contact us.

• Tunnel Materials

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 - Naruto Bridge (cable rack) ■ Adopted Product - HEX U-Nut (stainless steel, hot-dip galvanized) ■ Reason for Adoption - Locking function, drop prevention effect, simplification of on-site work ■ Other Features - High corrosion-resistant materials and surface treatment were required *For more details, please refer to the PDF document or feel free to contact us.

• Earthquake-proof and vibration-damping equipment

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.

• Earthquake-proof and vibration-damping equipment

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 - Bridge anti-fall device (anchor bolt) ■ Adopted Product - HEX U-Nut (hot-dip galvanized) ■ Reason for Adoption - Locking function and measures to prevent detachment ■ Other Features - A reduction in the number of parts and simplification of construction were required for post-installation. *For more details, please refer to the PDF document or feel free to contact us.

• Earthquake-proof and vibration-damping equipment

The U-NUT, synonymous with locking nuts, is the definitive locking nut that continues to evolve not only in terms of its locking performance but also in durability and vibration resistance. Here are some examples of where the locking nut U-NUT has been implemented. Adoption Location: Handrails inside tunnels (mounting hardware for handrails, cable racks, lighting, etc.) Adopted Product: HEX U-Nut (stainless steel, hot-dip galvanized) Reason for Adoption: Locking function and proven track record On-site construction, safety management, and measures to prevent falling Other Features: Performance results of the locking function can be verified according to NEXCO construction management guidelines.

• Earthquake-proof and vibration-damping equipment

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】 ■ Adoption Location - New Meishin Soundproof Panels (Support Mounting Anchors and Soundproof Panel Mounting Hardware) ■ Adopted Products - Clip U-Nut (Stainless Steel) / HEX U-Nut (Stainless Steel, Hot-Dip Galvanized) ■ Reasons for Adoption - Locking function, proven track record, on-site construction management/safety management, and fall prevention measures ■ Other Features - Performance results of the locking function can be verified in accordance with NEXCO construction management guidelines. *For more details, please refer to the PDF document or feel free to contact us.

• Earthquake-proof and vibration-damping equipment

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】 ■ Application Location - Exterior panels of high-rise buildings (panel mounting hardware) ■ Adopted Product - HEX U-Nut (stainless steel) ■ Reasons for Adoption - Locking effect, prevention of detachment, and others ■ Other Features - Special construction method to accommodate panel expansion and contraction *For more details, please refer to the PDF document or feel free to contact us.

• Earthquake-proof and vibration-damping equipment

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.

• Earthquake-proof and vibration-damping equipment

The U-NUT, known as the epitome of 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 - Solar power generation panels (panel mounting brackets and anchor bolts) ■ Products Used - SU-Nut (stainless steel) / HEX U-Nut (hot-dip galvanized) ■ Reasons for Adoption - Locking function along with anti-tampering and anti-theft effects ■ Other Features - Special design with rental of dedicated sockets *For more details, please refer to the PDF document or feel free to contact us.

• Earthquake-proof and vibration-damping equipment

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】 ■ Installation Location - Playground slide (handrail and stair attachment points) ■ Product Used - Cap-equipped U-NUT (stainless steel) ■ Reason for Adoption - Locking function, anti-drop effect, and improved safety during contact ■ Other Features - Enhanced aesthetics with cap-equipped U-NUT *For more details, please refer to the PDF document or feel free to contact us.

• Earthquake-proof and vibration-damping equipment

The "Fuji Rock Bolt Type N" is a locking bolt equipped with a high-quality anti-loosening function. Even in areas where using a nut is difficult, this product ensures that tightening work is carried out flawlessly. 【Features】 ■ Equipped with a high-quality anti-loosening function ■ Exhibits anti-loosening capabilities as well as sealing effects ■ Simplifies tightening work and prevents installation errors *For more details, please refer to the PDF document or feel free to contact us.

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