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Ever wonder why bolted connections in pressure-treated lumber often loosen? The wood fibers are not strong enough to prevent crushing, and the washers are too thin, so washers deform and joints eventually loosen. These 1/8” thick washers are just the ticket. Available in two diameters, they won’t deflect and distort like standard-thickness washers. ID: 9/32 x OD: 5/8" x 1/8" Thick. Imported.