The Hillman Group 811620 Hot Dipped Galvanized Hex Bolt, 1/2-Inch x 3-1/2-Inch, Product Description Hex Bolts are bolts with hexagonal heads and machine threads for use with a nut or in a tapped hole. This bolt is compatible with standard nuts and washers of the same thread pitch, grade, and finish. These bolts are fully threaded. From the Manufacturer Hex Bolts are bolts with hexagonal heads and machine threads for use with a nut or in a tapped hole. This bolt is compatible with standard nuts and washers of the same thread pitch, grade, and finish. These bolts are fully threaded. Features Lustrous Satin Undermounts Package length: 3.4" Package Width: 4.3" Package Height: 4.3" 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.