An assortment of hardened metric split lock washers from The Hillman Group. Ideal for situations where potential loosening from corrosion or vibration is a concern, split lock washers are used to prevent nuts and bolts from coming loose. These fasteners contain split ends that help "lock" into the mating material, thus providing a locking feature when tightened beneath a nut. Variants included in this assortment feature a zinc finish and range from 6mm to 24mm in diameter. Full assortments of #43284 contain eight (8) refills comprised of Hillman item numbers #43285 - #43292.