株式会社冨士精密 Official site

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'.

The "U-NUT" is a locking nut that is active in various industries, including motorcycles, four-wheel vehicles, industrial machinery, as well as construction, railways, and steel structures. The "FINE U-NUT" is a locking nut for bearings that is used primarily around rotating shafts in machine tools and industrial machinery, such as ball screws and spindles. Additionally, the "TWIN FU-NUT" is adopted in precision lock nuts for machine tools that require high thread accuracy and in cases where further measures against loosening are necessary. We offer a rich lineup, including the locking nut "U-NUT" that ensures reliable fastening, the bearing locking nut "FINE U-NUT" that eliminates the need for traditional keyway machining and tooth washer installation for shafts, and the precision lock nut "TWIN FU-NUT," which further enhances the loosening prevention performance of the FINE U-NUT with two friction rings. We can also manufacture special shapes in consultation with our customers. *For more details, please refer to the PDF materials or feel free to contact us. *3D CAD data is also available for download.

Fuji Precision Homepage: U-TOWN

basic information

"Metal Ring Anti-Loosening Function" Structure: The 'U-NUT', 'FINE U-NUT', and 'TWIN FU-NUT' consist of a nut body and a friction ring (special spring), with the friction ring integrated into the top surface of the nut through a riveting process. Function: The force generated by the elasticity of the friction ring, along with the force that pushes against the male thread flank, creates a pre-torque (friction torque) that provides the anti-loosening effect.

Price information

Please contact us.

Delivery Time

Please contact us for details

The delivery date may vary depending on the quantity, so please feel free to contact us.

Model number/Brand name

Safety and security lock nut "U-NUT", bearing use "FINE U-NUT", precision lock nut "TWIN FU-NUT".

Applications/Examples of results

【Delivery Examples (Excerpt)】 <U-NUT> ■ Motorcycle rear suspension and others ■ Bridge collapse prevention device ■ Marine engine ■ Railway <FINE U-NUT> ■ Machine tools ■ Semiconductor automatic sealing device ■ Ball screw ■ Food machinery <TWIN FU-NUT> ■ Automatic Segiri processing machine ■ Sugarcane harvester *For more details, please refer to the PDF document or feel free to contact us.

Related Videos

Pre-Bolting Torque Type Lock Nut U-NUT Series Comprehensive Catalog

CATALOG

Pre-Bearing Torque Type Lock Nut FINE U-NUT Series Comprehensive Catalog

CATALOG

CAD data(64)

Model number overview File
FUN_SUS sldpr data
  • 3D zip ( 8MB)
FUN_SS sldpr data
  • 3D zip ( 8MB)
FUN_SC sldpr data
  • 3D zip ( 11MB)
FUN_SUS IGS data
  • 3D zip ( 3MB)
FUN_SS IGS data
  • 3D zip ( 4MB)
FUN_SC IGS data
  • 3D zip ( 5MB)
CU_SUS sldprt data
  • 3D zip ( 8MB)
CU_SS_Molten Zinc Coating IGS data
  • 3D zip ( 180KB)
U_SC IGS data
  • 3D zip ( 2MB)
U_SC sldprt data
  • 3D zip ( 8MB)
BLU_SUS IGS data
  • 3D zip ( 221KB)
BLU_SUS sldprt data
  • 3D zip ( 912KB)
GU_SS IGS data
  • 3D zip ( 152KB)
GU_SS sldprt data
  • 3D zip ( 896KB)
SU_SUS IGS data
  • 3D IGS ( 464KB)
SU_SUS sldprt data
  • 3D SLDPRT ( 237KB)
TFU_SC sldprt data
  • 3D zip ( 10MB)
TFU_SC IGS data
  • 3D zip ( 7MB)
WU_SC sldprt data
  • 3D zip ( 2MB)
WU_SC IGS data
  • 3D zip ( 219KB)
WU_SS sldprt data
  • 3D zip ( 2MB)
WU_SS IGS data
  • 3D zip ( 330KB)
WU_SUS sldprt data
  • 3D zip ( 2MB)
U_SS IGS data
  • 3D zip ( 2MB)
U_SS sldprt data
  • 3D zip ( 9MB)
U_SUS IGS data
  • 3D zip ( 2MB)
U_SUS sldprt data
  • 3D zip ( 6MB)
U_3 types_SC sldprt data
  • 3D zip ( 2MB)
U_3 types_SC IGS data
  • 3D zip ( 227KB)
U_3 types_SS sldprt data
  • 3D zip ( 4MB)
U_3 types_SS IGS data
  • 3D zip ( 680KB)
U_3 types_SUS sldprt data
  • 3D zip ( 3MB)
U_3 types_SUS IGS data
  • 3D zip ( 445KB)
FLANGE_SUS IGS data
  • 3D zip ( 168KB)
UNC_SC sldprt data
  • 3D zip ( 3MB)
UNC_SC IGS data
  • 3D zip ( 429KB)
UNC_SS sldprt data
  • 3D zip ( 4MB)
UNC_SS IGS data
  • 3D zip ( 713KB)
WU_SUS IGS data
  • 3D zip ( 252KB)
WELD_SS sldprt data
  • 3D zip ( 2MB)
WELD_SS IGS data
  • 3D zip ( 364KB)
CAP_SS sldprt data
  • 3D zip ( 5MB)
CAP_SS IGS data
  • 3D zip ( 870KB)
CAP_SUS sldprt data
  • 3D zip ( 3MB)
CAP_SUS IGS data
  • 3D zip ( 418KB)
FLANGE_SC sldprt data
  • 3D zip ( 773KB)
FLANGE_SC IGS data
  • 3D zip ( 179KB)
FLANGE_SUS sldprt data
  • 3D zip ( 822KB)
Small U_SC sldprt data
  • 3D zip ( 2MB)
Small U_SC IGS data
  • 3D zip ( 301KB)
Small U_SS sldprt data
  • 3D zip ( 2MB)
Small U_SS IGS data
  • 3D zip ( 403KB)
Small U_SUS sldprt data
  • 3D zip ( 566KB)
CU_SS_Molten Zinc Coating sldprt data
  • 3D zip ( 624KB)
CU_SUS IGS data
  • 3D zip ( 3MB)
FLANGE_SS sldprt data
  • 3D zip ( 3MB)
FLANGE_SS IGS data
  • 3D zip ( 607KB)
UNC_SUS sldprt data
  • 3D zip ( 3MB)
UNC_SUS IGS data
  • 3D zip ( 609KB)
Seat cushion with attachment_SS sldprt data
  • 3D zip ( 861KB)
Seat cushion with payment_SS IGS data
  • 3D zip ( 221KB)
Seat with metal base_SUS sldprt data
  • 3D zip ( 2MB)
Seat with metal base_SUS IGS data
  • 3D zip ( 262KB)
Small U_SUS IGS data
  • 3D zip ( 117KB)

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