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Flange nuts have a washered base in order to ensure fasteners remain firmly secure. The washered base helps to spread pressure to a larger surface area, ensuring a secure fit.<br><br>

Serrated Hex Flange Nut - 1/4-20 - Zinc CR+3 - Case Hardened Steel - UNC - Pkg of 100 - BBI 857180

857180-serrated-hex-flange-nut-1-4-20-zinc-case-hardened-steel-unc-pkg-of-100

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