Steel Self-Drilling Screw， Zinc Plated Finish， Pan Head， Square Drive， #2 Drill Point， #6-20 Thread Size， 1/2" Length (Pack of 100)<img src="http://ecx.images-amazon.com/images/I/412hTnfeNYL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41%2BpMiL-JYL.jpg" noproxy>