The Hillman Group 687 Jam Nut, 1/2-13-Inch, 8-Pack
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<b>[Product Information]</b><br>
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<li>Often used when a nut needs to be locked in place without clamping against another object</li>
<li>They can also be used to secure an item on a fastener without applying force to that object</li>
<li>Zinc finish</li>
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