Locking Nut Product List and Ranking from 10 Manufacturers, Suppliers and Companies

Last Updated：Oct 22, 2025 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：Oct 22, 2025 Aggregation Period:Sep 24, 2025～Oct 21, 2025
This ranking is based on the number of page views on our site.

株式会社冨士精密 Osaka//Machine elements and parts
ハードロック工業 Osaka//Manufacturing and processing contract
紀州ファスナー Osaka//Other manufacturing
4 大阪フォーミング Osaka//Machine elements and parts
5 日本プララド Hyogo//Industrial Machinery

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Locking Nut Product ranking

Last Updated：Oct 22, 2025 Aggregation Period:Sep 24, 2025～Oct 21, 2025
This ranking is based on the number of page views on our site.

Single unit locking nuts "U-NUT" "FINE U-NUT" 株式会社冨士精密
Locking nut "FINE U-NUT" 株式会社冨士精密
Locking nut "GU-NUT" compliant with JIS standards. 株式会社冨士精密
4 Bearing Lock Nut "FINE U-NUT" 株式会社冨士精密
5 『U-NUT』『FINE U-NUT』『TWIN FU-NUT』株式会社冨士精密

Locking Nut Product List

31～45 item / All 82 items

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[Fine U-Nut Delivery Case] Conveyor

Keyway machining for shafts, washers, and no installation technology required! Examples of delivered locking nuts!

The "Fine U-Nut" allows for arbitrary and precise positioning, making torque management easy. Furthermore, it is a revolutionary anti-loosening nut for bearings that eliminates the need for keyway machining on shafts, washers, and installation techniques. It improves the rotational balance of bearings that generate power in various machinery industries. This product is also used in conveyors, with examples of it being supplied as electric lift and slab components for steel mills. 【Features】 ■ Arbitrary and precise positioning is possible ■ Easy torque management ■ Improves the rotational balance of bearings * For more details, please refer to the PDF materials or feel free to contact us. * CAD data is also available for download.

Company：株式会社冨士精密
Price：Other

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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 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 - Tokyo Skytree (Curtain Wall) ■ Adopted Product - HEX U-Nut (Stainless Steel) ■ Reasons for Adoption - Locking function, simplification of on-site construction, reduction of component count ■ Other Features - Can be fastened in limited spaces *For more details, please refer to the PDF document or feel free to contact us.

Company：株式会社冨士精密
Price：Other

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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.

Company：株式会社冨士精密
Price：Other

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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 is active in various industries, from steel structures such as railways and bridges 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: 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 conventional 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 "U-NUT," please download the PDF or feel free to contact us.

Company：株式会社冨士精密
Price：Other

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『U-NUT』『FINE U-NUT』『TWIN FU-NUT』

Safety and security lock nuts "U-NUT" and "FINE U-NUT" are available in a variety of sizes and shapes.

"U-NUT" and "FINE U-NUT" are adopted in various medical devices such as wheelchairs and digital panorama X-ray imaging equipment. "U-NUT" is a locking nut that is active in various industries ranging from cars, motorcycles, and industrial machinery to steel structures like railways and bridges. "FINE U-NUT" is a locking nut specifically for bearings used in rotating shafts of industrial machinery such as ball screws and spindles. We offer a rich lineup including the reliable locking nut "U-NUT" that ensures secure fastening, and the bearing locking nut "FINE U-NUT" that eliminates the need for traditional keyway machining of shafts and the installation of toothed washers. We also have the precision lock nut "TWIN FU-NUT," which further enhances the locking performance of FINE U-NUT with two friction rings. We also accept orders for custom shapes. 【Product Lineup】 ■U-NUT ■FINE U-NUT ■TWIN FU-NUT *For more details, please refer to the PDF materials or feel free to contact us. *3D CAD data is also available for download.

Company：株式会社冨士精密
Price：Other

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Locking nut "V Nut" [Can be used directly on the bolt in use]

A locking nut that can be used directly on the bolt in use! Usable even after being removed multiple times!

The locking nut "V Nut" consists of two components: the nut itself and a special spring. A groove is machined into the top surface of the nut to fit the special spring (friction ring), and the protruding part is wound inward toward the center, fixing the friction ring to the top of the nut. 【Features】 ■ Can be used directly with currently used bolts ■ Does not fall off even when the bolt and nut are in an intermediate position due to the action of the friction ring ■ Generates pre-tension torque after removal, suppressing "rotational loosening" ■ Higher safety and workability compared to standard nuts ■ Excellent heat and cold resistance, with no concerns about functional degradation *For more details, please request documentation or view the PDF data available for download.

Company：紀州ファスナー
Price：Other

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New mechanism's locking nut 'NEW Lock Nut'

Demonstrates loosening and detachment prevention effects in vibrating environments, single-type locking nut NETIS registration number KK-150023-A.

【Product Overview】A single-type locking nut used on screws in areas subject to vibration, providing anti-loosening and anti-falling effects. The combination of a recessed nut and an eccentric washer exhibits a powerful anti-loosening effect due to the wedging action, even in vibration environments where double nuts would loosen. Temporary tightening can be done by hand. Torque management is required only once.

Company：西日本高速道路エンジニアリング関西
Price：Less than 10,000 yen

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Locking K nut

The friction ring demonstrates a loosening prevention function! For safety measures and vibration countermeasures.

This product is a nut with a locking feature. The locking function is activated by a friction ring (leaf spring) attached to the top of the nut. It complies with tests based on NAS3350 and 3354. 【Features】 ■ Prevents loosening by strongly pressing the threads with the friction ring ■ No special tools required as it has the same handling as commercially available hex nuts ■ Complies with tests based on NAS3350 and 3354 ■ Stainless products are treated with a fluorine coating to prevent seizing *For more details, please refer to the PDF document or feel free to contact us.

Company：ケー・エフ・シー
Price：Other

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Locking nut "Smart Hyper Road Nut"

A high-performance locking nut with a built-in spring, confirmed to have no loosening or detachment in a looseness test compliant with NAS3350, with an upper limit of 30,000 cycles.

The "Smart Hyper Load Nut" is a nut that significantly contributes to reducing installation costs. It has been proven to have anti-loosening performance through tests conducted using an impact-type vibration testing machine compliant with the NAS3350 standard. It can be installed and removed using the same method as a standard nut. 【Features】 ■ A high-function anti-loosening nut with a built-in spring ■ Can be used with the exact same method as a standard nut for tightening ■ Designed for removal with general-purpose tools ■ Utilizes the characteristics of the integrated spring to prevent loosening and detachment of the nut ■ Maintains anti-loosening effectiveness even after repeated use *For more details, please request materials or view the PDF data available for download. <We will send you a free sample set> If you would like a sample, please request it through the "Contact Us" section below. 　Contents of the free sample set　　・Smart Hyper Load Nut (SUS304) M12 x 1 piece 　・T-Spring (SUS304) M12 x 1 piece 　・Smart Insert Nut (SUS304) M12 x 1 piece *If you have other requests, please provide details through the "Contact Us" section.

Company：東京衡機エンジニアリング
Price：Other

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Locking nut, fixed to the base steel material "Smart Insert Nut"

Aren't you using nuts welded to the base steel material? Secure the locking nuts without welding! Solve the problems of nut installation on the base steel material all at once!

Fixed to the base steel material without welding through external screw processing! There is a way to completely solve the problems of welding nuts! Are you using nuts welded to the base steel material? Are you facing issues when attaching nuts through welding? Problems with nut welding: - Distortion occurs - Variability in quality with each weld - Deformation happens - A single failure at one point ruins the entire steel material - Requires time-consuming protection measures And more. To break this situation, we developed the 'Smart Insert Nut.' This is a spring-integrated anti-loosening nut, improved from the 'Smart Hyper Load Nut,' which is well-known for its effectiveness in preventing loosening due to vibrations. By processing external threads on the outside of the nut, it can now be fixed to the base steel material simply by tapping, eliminating the need for welding. Not only does it solve the welding problem, but it also addresses the issue of nut loosening!! ■ No welding required! ■ No rust prevention treatment needed! ■ Improved work efficiency! ■ No worries about thermal deformation! ■ Ensured accuracy of nut positioning! ■ No concerns about bolt loosening! ◆◆◆ We will send you a free sample set ◆◆◆

Company：東京衡機エンジニアリング
Price：Other

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FLEXLOC Locking Nut

Due to the high strength of the nut, it can be used with bolts of strength grades 8.8, 10.9, and 12.9.

By filling the gap between the male and female threads over 360 degrees, the prevention of loosening is ensured against any vibrations.

Company：中島工機
Price：Other

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Data Area Calculation Database

This is an introduction to plane formulas and area formulas (volume of solids and various numerical values).

In the area of area calculation databases, we introduce plane formulas and area calculation formulas (volumes of solids and various numerical values). Osaka Forming Co., Ltd. is a manufacturer that leverages 40 years of experience and advanced production technology, specializing in processing difficult materials such as stainless steel, as well as titanium and others, in addition to iron and aluminum. To ensure we can respond meticulously to customer orders, we maintain a rich inventory of products in various sizes and can accommodate orders from small lots to large lots. As a united team, we strive to meet our customers' expectations and will continue to provide high-quality products.

Company：大阪フォーミング
Price：Other

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Database of Mechanical Properties of Material Cross-Sections

This is an introduction to the mechanical properties of cross-sections in quadrilaterals, triangles, polygons, and circles.

The database of mechanical properties of cross-sections introduces the mechanical properties of cross-sections in rectangular, triangular, polygonal, and circular shapes. Osaka Forming Co., Ltd. is a manufacturer that leverages 40 years of experience and advanced production technology, specializing in processing difficult materials such as stainless steel, as well as titanium and others, in addition to iron and aluminum. To ensure we can respond meticulously to customer orders, we maintain a rich inventory of products in various sizes and can accommodate orders from small to large lots. As a united team, we strive to meet our customers' expectations and will continue to provide high-quality products.

Company：大阪フォーミング
Price：Other

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E-LOCK Series Bearing Stop Nut Type

Friction rings prevent loosening! Easy-to-install nut-type bearing stops.

The E-LOCK series bearing stop nut type is a bearing stop that can be installed directly without the need for washers or keyway machining. The friction ring incorporated into the top surface of the nut contacts the threads of the bolt, applying strong pressure through spring action stress and reaction force, preventing loosening and free rotation. Torque management is easy, and installation is simple. A wide range of sizes is available! **Features** - No keyway machining required for the shaft - Reduction of machining costs possible - No need for a washer, reducing bending mistakes - Exhibits anti-loosening effects against vibrations - NETIS registration number: KK-180059-A *For more details, please refer to the catalog. Feel free to contact us with any inquiries.*

Company：大阪フォーミング
Price：Other

Metal bearings

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Locking Nut E-LOCK Comprehensive Catalog *Technical Book / Case Studies Collection

【NETIS New Registration!】Not only does it provide anti-loosening performance, but it also offers high durability and peace of mind and trust in various vibration scenarios. *We will be exhibiting at the Automotive Technology Exhibition!

The E-LOCK series offers a wide variety of sizes and shapes to meet various needs. In addition to its anti-loosening performance, it excels in durability, providing safety and reliability in various vibration scenarios. 【What’s great about E-LOCK!】 ■ Exhibits stable anti-loosening effects ■ Prevents early detachment even if the tightening axial force decreases ■ Suitable for fastening soft or easily damaged materials ■ Easy installation that prevents installation errors ■ All-metal products, excellent in heat and cold resistance ■ Can be reused multiple times ■ NETIS registration number: KK-180059-A 【Exhibition Details】 Exhibition Name: 2020 Automotive Technology Exhibition in Yokohama Date: May 20 (Wednesday) to May 22 (Friday), 2020 10:00 AM to 6:00 PM *Until 5:00 PM on the 22nd Venue: Pacifico Yokohama Exhibition Hall Booth: 426 *For more details, please contact us or download the catalog.

Company：大阪フォーミング
Price：Other

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