Stainless steel finish, 5/16'' flat washer. Pack of 100. 5/16'' Stainless steel Commercial flat washer 100 Pack.
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.