With over 50 years of history. The FUJILOK U-NUT is now highly regarded as the first name in locknuts across all industries from steel structures such as railways and connecting bridges to automobiles, motorcycles, and on up to industrial machines. No matter how harsh the use environment is, the U-NUT which is required for safety and peace of mind is the definitive version of the locknut which continues to evolve in terms of durability, vibration resistance, etc. as well as locking performance. We also produce special forging parts in various shapes according to customer requirements.