An assortment of zinc-plated square nuts from The Hillman Group. Square nuts can be used in a channel or welded into place. Square nuts have a greater surface in contact with the part being fastened and therefore provide greater resistance to loosening. Variants included in this assortment range from #6-32 to 3/4"-10 in fine & coarse thread sizes. Full assortments of #3331 contain eleven (11) refills comprised of Hillman item numbers #3332 - #3342.