Crown Bolt 19822 1/4 Inch x 7/16 Inch Zinc-Plated Steel SAE Flat Washers, 100-Count
Used in applications with nuts and bolts. The flat washer provides a greater bearing surface which helps prevent a nut or bolt head from tearing through the material. Flat washers are commonly used in decks and fence building. The called out size is the inner diameter of the washer.