The Hillman Group 3585 1/4-20 By 1-Inch Stainless Steel Spanner Security Pan Machine Screw, 5-Pack
</br></br>
<div style="text-align:left">
<b>[Product Information]</b><br>
<ul>
<li>Security screws are designed so that it either cannot be removed when fixed or which requires a restricted access tool to remove it</li>
<li>Used for security purposes</li>
<li>Use with Nut of the same diameter and finish</li>
<li>Stainless Steel</li>
</ul>
</div>
</br></br></br></br></br></br></br></br></br></br>

</br></br></br></br></br></br></br></br></br></br>
<img src='http://ecx.images-amazon.com/images/I/316x5eeKDIL.jpg'></br>