- Package of 100 United States Standard premium washers
- Inside Diameter 5/16"
- Outside Diameter 3/4"
- Thickness .079"
- Zinc plated for corrosion resistance
These general use flat washers are positioned under the head of a bolt or nut in order to provide a smooth bearing surface and distribute the fastener load over a wider area. Flat washers are commonly used in decks and fence building.