Hillman 221010 Hex Tap Bolt, Silver Machine bolt designed to fasten facing pieces of wood and/or metal. Fully Threaded shank allows them to accommodate a large material thickness range. Grade 2: appropriate for most general use (match with Grade 2 washer). Zinc coating for corrosion resistance. Pre-drill holes for best results. Features Machine bolt designed to fasten facing pieces of wood and/or metal Fully Threaded shank allows them to accommodate a large material thickness range Grade 2: appropriate for most general use (match with Grade 2 washer) Zinc coating for corrosion resistance 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.