The Hillman Group 831646 3/8-16 x 5-Inch Stainless Steel Hex Cap Screw， 25-Pack<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>A common feature on a hex cap screw is a washer surface directly under the head which creates a better seal</li><li>An alternative for using them without nuts is to install them directly into a compatible internally threaded hole</li><li>Stainless Steel</li></ul></div><img src="http://ecx.images-amazon.com/images/I/414klmF1rLL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/21Sx3E6PYeL.jpg" noproxy>