An assortment of aluminum hex bolt & matching nut variants from The Hillman Group. Hex bolts have a hex head and smooth shoulder area beyond the standard amount of threading. These bolts have myriad uses across construction, agricultural, and automotive applications. Variants included in this assortment come in 1/4"-20 & 5/16"-18 coarse thread sizes and range from 1/2" to 2-1/2" in length. Full assortments of #33900 contain twelve (12) refills comprised of Hillman item numbers #33901 - #33912.