An assortment of USS coarse and SAE fine hex slotted nut variants from The Hillman Group. Slotted nuts have grooved heads that align with holes in the mated bolt to accept the insertion of a cotter pin, locking the nut in place. Variants included in this assortment range from 1/4" to 3/4" in diameter. Full assortments of #2682 contain sixteen (16) refills comprised of Hillman item numbers #2683 - #2698.