TWIN FU-NUT

<Features>
Performance enhancement: Enhances the locking performance of the FINE U-NUT
Simple fastening: Just tighten the nut to complete fastening
Reusability: Can be reused
Thread accuracy: ISO4H thread accuracy
Surface run-out accuracy: The accuracy of seat surface run-out in relation to the screw is 1,000 minutes (mm)

<General names>
Precision bearing nut, Adapter nut, Grooved round nut, Precision locknut