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Lock nuts remain stiff when placed on bolts. They are useful in applications where vibration may cause a fastener to come loose. Lock nuts are also able to be used to keep other nuts in place by threading over them.<br><br>

All-Metal Hex Lock Nut - 5/8-18 - Med. Carbon Steel - Zinc & Wax CR+3 - Grade C - 50 Pk - BBI 825240

825240-all-metal-hex-lock-nut-5-8-18-medium-carbon-steel-zinc-and-wax-grade-c-pkg-of-50

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