M4 External Tooth Washer
M4 External Tooth Washer has teeth that extend radially outward to bite into the bearing surface. Like internal tooth lock washers, they are designed to prevent a nut or bolt head from loosening with the strut action of the teeth. They work best with larger screw or bolt heads. External tooth lock washers provide maximum torsional resistance.
- Standard : Metric
- Material : Mild Steel
- Surface Finish : Black Oxide or Zinc (slightly blue-ish or yellow)
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Warranty: This product (M4 External Tooth Washer) comes with warranty against manufacturing defect, refer warranty policy on how to claim warranty.