Hillman Flat Washer Uss 1/4 is designed for use with nuts and bolts, providing a greater bearing surface to help prevent the nut or bolt head from tearing through the material. This flat washer is commonly used in applications such as decks and fence building, making it a reliable choice for various construction projects. The specified size refers to the inner diameter of the washer, ensuring a proper fit for your fastening needs. Model Number: