Hillman Hex Nut 7/8 " Coarse 10 / Box Hex nuts are to be used with machine bolts to adhere facing materials to prevent tension and shear movement. Specifically in wood to wood, wood to metal, or metal to metal applications. Zinc grade 2 steel hex nuts are recommended for most general uses and are . Be sure to pre-drill any holes and to use washers and bolts that are a similar grade and finish. Thread Diameter: 7/8 In. Threads Per Inch: 9 tpi Finish: Zinc Grade: 2 Material: Steel Thread Type: Coarse Features Made in United States 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.