An assortment of nylon hex bolt variants from The Hillman Group. Nylon hex bolts are partially threaded bolts for use with a nut or in a tapped hole in soft material. Variants included in this assortment come in coarse 1/4"-20 & 5/16"-18 thread sizes and range from 3/4" to 3" in length. Full assortments contain twelve (12) refills comprised of Hillman item numbers #59411 - #59422.