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U-nut(28)
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.
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FINE U-Nut(11)
It allows for arbitrary and appropriate positioning, and torque management is also easy. This revolutionary locking nut for bearings eliminates the need for keyway machining on shafts, washers, and mounting techniques, improving workability and reducing total costs. It enhances the rotational balance of bearings, generating "power" in various machinery industries.
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TWIN FU-Nut(3)
This is a precision lock nut of the pre-bolting torque type. The loosening prevention performance of the "Fine U-Nut" has been further enhanced with two friction rings (special springs).
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Fuji Rock Bolt Type N(1)
Fujiseimitsu, a comprehensive manufacturer of locking nuts, produces the "Fuji Lock Bolt N type," which incorporates high-quality locking features and sealing effects in bolts as well. Even in areas where using nuts is difficult, the "Fuji Lock Bolt N type" ensures thoroughness in tightening operations.
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Vehicle-related(7)
U-NUT, used in two-wheeled and four-wheeled vehicles, as well as special vehicles and construction machinery. It is used in motorcycle rear axles and sprockets, automobile engine mounts, and support brackets for special vehicles.
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Architecture and Civil Engineering(11)
U-NUT is widely used in buildings, highways, bridges, and infrastructure. It is used in sound barriers, tunnels, piping, and railway vehicles, as well as in buildings for curtain walls and brackets.
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Mechanical-related(13)
U-NUT, used in various sizes of machines, from work machines and industrial equipment to transport machinery and electrical devices. FINE U-NUT It has a proven track record in a wide range of fields, from general industrial machinery to food machinery and medical devices. It is widely used for fixing shafts such as main shafts and rotating shafts, as well as for securing cylinders and flanges.
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Medical and welfare-related(5)
It is used in various places related to medical and welfare, such as medical devices and wheelchairs.
