USS & SAE Nylon Insert Lock Nuts Assortment (9/16" thru 7/8" Dia.)Hillman Item #4362
An assortment of zinc-plated nylon insert 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 9/16" to 7/8" in diameter. Full assortment contains eight (8) refills comprised of Hillman item numbers #4363 - #4370.