8MM serrated galvanized lock washers 
 
High-grip 8mm serrated lock washers made from galvanized steel to prevent nuts and bolts from loosening under vibration. The serrated edges lock firmly into the surface, while the galvanized coating provides strong rust and corrosion resistance.
 
Specs:
Size: 8mm
Material: Galvanized steel
Type: Serrated lock washer (anti-vibration)
Corrosion-resistant zinc coating
Pack: 100 pieces