Hillman 830504 Stainless Steel 5/16-Inch Flat Washers, 100-Pack, 1 Pack Product Description Stainless steel finish, 5/16'' flat washer. Pack of 100. 5/16'' Stainless steel Commercial flat washer 100 Pack. From the Manufacturer 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. Features Item Weight: 6.0 lb Country of Origin: China Brand name: Hillman Item Dimensions: 2.31"L x 2.68"W x 1.56"H USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.