An assortment of zinc-plated, nylon-insert hex flange lock nut variants from The Hillman Group. Nylon insert lock nuts are hexagonal nuts used with bolts and washers of the same material, finish, and grade. The interior nylon ring creates rotational resistance when displaced by a mating male threaded fastener, thus preventing loosening. The nylon insert also helps resist vibration and adds extra corrosion resistance. This assortment features variants ranging from #10-24 to 5/8"-11 in coarse thread size. Full assortments of #34373 contain six (6) refills comprised of Hillman item numbers #34375 - #34378, #34380, and #34381.