GRK 772691102256 RSS Bulk  5/16-Inch  by 4-Inch Screw
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<b>[Product Information]</b><br>
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<li>Built-in washer head</li>
<li>Climatek coated and hardened steel</li>
<li>ICC report ESR-2442</li>
<li>Uses GRK bit T-30</li>
<li>Self-tapping</li>
</ul>
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<img src='http://ecx.images-amazon.com/images/I/31jkEJo5AaL.jpg'></br>