|Main Body||Spring Steel(Hardness: 380-450 HV)
Ferrosoferric Oxide Film (Black)
- Ribs on both sides of the washer hook onto the bolt bearing surface and intended attachment section to prevent looseness due to vibration.
- Washers for loosing prevention. For connecting locations that cannot use other means such as adhesives.
- More effective for loosing prevention than standard spring washers.