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Hillman 660053 is a USS flat washer made of steel with a zinc-plated finish, sized to fit 3/8 in. bolt sizes. The washer distributes bearing pressure to protect materials and prevent bolts or screws from boring into surfaces. It is specified using inch measurements and is listed as manufactured in the United States; the first-source listing indicates a single-piece package quantity.
Steel USS flat washer, zinc-plated finish, fits 3/8 in. bolts, inch system of measurement
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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