U-nut
U-nut
The U-nut is a locking nut that incorporates a "metal ring anti-loosening feature." It integrates the nut body and a friction ring (a special spring) through a riveting process. When a bolt is screwed into the U-nut, the friction ring begins to deform, pressing against the bolt's threaded surface. The force generated by the elasticity of the friction ring, along with the force that pushes against the threaded flange surface, creates a pre-torque (friction torque) that acts as the anti-loosening mechanism. Having been around for over 60 years, the U-nut is widely supported in the industry as a synonym for locking nuts and is active in various sectors, including motorcycles, cars, machine tools, railways, bridges, and construction.
1～28 item / All 28 items
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Locking Nut "Flange U-NUT"
Reduce the process of fitting washers! Improve aesthetics with a design integrated with the flange.
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Flanged U-Nut (Stainless Steel) with Locking Feature
Excellent corrosion resistance! The seat surface is stable, and fastening performance is improved.
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Locking nut "Cap type U-NUT"
There are delivery examples for fall prevention devices, commercial fully automatic washing machines, curtain walls, and more!
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Locking nut with washer U-NUT
Loosening prevention feature + disc spring + loosening prevention nut that improves work efficiency.
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Locking nut "CLIP U-NUT"
A locking nut that only requires drilling a hole in the material, eliminating the need for welding nuts or tapping screws.
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Locking nut "BLU-NUT"
Locking function + one-sided fastening method nut
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Locking nut "SU-NUT"
Locking nut + theft prevention + tamper-proof nut
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Locking nut "GU-NUT" compliant with JIS standards.
Expanded the shape of the friction ring to 270°! A lock nut that complies with JIS standards.
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Locking nut "Small U-NUT"
For reducing the workspace! Tools can be shared, making work more efficient.
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Locking nut "Weld U-NUT"
Fastening by screwing in the bolt! Projection type nut.
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Locking nut "Unify U-NUT"
Aircraft, compatible with American, British, and Canadian standards adopted in the automotive industry!
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Locking nut "Wit U-NUT"
Compatible with the old British standards commonly used in construction and plumbing!
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Adoption of 'HEX U-Nut' for handrails inside the tunnel.
U-NUT (stainless steel, hot-dip galvanized) is used for mounting brackets for cable racks and lighting in tunnels.
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Adopted for the new Meishin Expressway soundproof panels: "Clip U-Nut / HEX U-Nut"
The U-NUT coated with stainless steel and hot-dip galvanized zinc is used for the installation anchors of soundproof panels and the mounting brackets for soundproof panels on the New Meishin Expressway.
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HEX U-Nut adopted for Tokyo Skytree
U-NUT (stainless steel) is used in the curtain wall of Tokyo Skytree.
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Adoption of 'HEX U-Nut' for high-rise building exterior panels.
U-NUT (stainless steel) is used as a mounting fixture for exterior panels of high-rise buildings.
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Adopted for solar power generation panels: "SU Nut/HEX U Nut"
U-NUTs coated with stainless steel and hot-dip galvanized zinc are used for mounting brackets and anchor bolts of solar power generation panels.
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Adopted for bridge collapse prevention device: "HEX U-Nut"
The U-NUT coated with molten zinc is used for the anchor bolts of the bridge anti-fall prevention device.
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Cap-equipped U-NUT adopted for playground slide
The U-NUT with a cap is used for the installation of handrails and stairs on playground slides.
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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.
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HEX U-Nut adopted for the Naruto Bridge
U-NUT (stainless steel, hot-dip galvanized) is used in the cable rack of the Naruto Bridge.
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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!
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Locking nut "U-NUT"
Since its birth over 60 years ago, the U-NUT, known for its reliability and track record, continues to evolve in terms of anti-loosening performance, durability, and vibration resistance.
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Disaster prevention and disaster measures! Locking nut 'U-NUT'
Since its birth over 60 years ago, the U-NUT, known for its reliability and achievements, is the industry standard for locking nuts that deliver safety and peace of mind.
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Isn't that sign wobbling? Loose prevention nut 'U-NUT'
Contributing to fall prevention and safety measures! We provide safety and peace of mind, no matter how harsh the usage environment is.
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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.
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Single lock nut for accessory fastening.
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!
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Single unit locking nuts "U-NUT" "FINE U-NUT"
Not your typical nut! The safety and peace of mind locking nuts 'U-NUT', 'FINE U-NUT', 'TWIN FU-NUT'.
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