Precision nuts fits highly precised or standard angular contact ball bearing and fits taper roller bearings with needle bearings. They can lick themselves. The threads and flat mating face are machined from 1 attachment item allowing to achieve 0.005mm tolerance squareness precision.
They can be applied in pre-loading bearing sets, ensuring hold to pre-load value, maintaining precision rate of the highly-precised bearings and being reliable and durable in securing the bearing set's place even if its not pre-loaded or even if loaded axial in a high level during operation.