Metric Nylon Insert Lock Nut (M12-1.75)

An assortment of zinc-plated metric 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 from M4-0.70 to M20-2.50 in coarse screw thread size. Full assortment contains ten (10) refills comprised of Hillman item numbers #3383 - #3388 and #45040 - #45043.