The Hillman Group 811608 Hot Dipped Galvanized Hex Bolt, 1/2-Inch x 1-1/2-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 They Require A Pre-Drilled Hole With Compatible Female Thread Hex Bolts Feature A Six-Sided Head, Which Is Designed To Be Tightened Using A Wrench Or Drill Hot Dipped Galvanized From The Brand Name: The Hillman Group 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.