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Zinc-Plated Steel External-Tooth Lock Washer for 1/2" Screw Size, 0.513" ID, 0.9" OD (Packs of 100)

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Zinc-Plated Steel External-Tooth Lock Washer for 1/2" Screw Size, 0.513" ID, 0.9" OD (Packs of 100)