Steel Self-Drilling Screw， Black Phosphate Finish， Modified Truss Head， Phillips Drive， #2 Drill Point， #6-20 Thread Size， 1/2" Length (Pack of 100)<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Steel is often used in applications where strength is the primary consideration</li><li>Black phosphate coating provides corrosion resistance and lubricity</li><li>Modified Truss head is extra wide with a low-profile dome and integral round washer</li><li>Phillips drive has an x-shaped slot that accepts a Phillips driver and is designed to prevent over-tightening</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41KiJlAJ5CL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51BbsiMHxZL.jpg" noproxy>