A hardened circular washer with twisted prongs or teeth which extend inward from the inside edge of the washer.
This style is preferred when finished appearance is crucial and the teeth must be hidden under the head of the screw
Made from spring steel, zinc plated.
Rockwell Hardness: C40-50.
Inside Diameter: Min .195 Max .204
Outside Diameter: Min .365 Max .381
Thickness: Min .018 Max .024
A hardened circular washer with twisted prongs or teeth which extend inward from the inside edge of the washer. This style is preferred when finished appea