Stainless Steel Internal & External Toothed Lock Washers Assortment (#4 thru 1/2") (43789)
by Paulin
An assortment of stainless steel internal & external toothed lock washers from The Hillman Group. Internal toothed lock washers are hardened, circular washers with twisted prongs, or "teeth," extending inward from the inside edge. These "teeth" are used to prevent nuts and bolts from loosening caused by vibration and/or corrosion. External toothed lock washers have serrations around the outer diameter which provide better holding power due to a greater surface area. Variants included in this assortment run from #4 thru 1/2" in screw size. Full assortments of #43789 contain sixteen (16) refills comprised of Hillman item numbers #43790 - #43805.