The Hillman GroupThe Hillman Group 35259 Hex Washer Head Self-Piercing Screw 8 x 3/4 75-Pack<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>They are used in wood， fiberglass and metal</li><li>Self-drilling or self-tapping metal screws increase productivity by reducing the number of steps required to screw together pieces of metal</li><li>Zinc-Plated</li><li>The self-drilling screw possesses a drill point enabling it to drill in its own hole in thin gauge steel</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41lTppunPdL.jpg" noproxy>