Steel Thread Rolling Screw for Metal， Black Oxide Finish， 82 Degree Undercut Flat Head， Phillips Drive， #6-32 Thread Size， 3/8" Length (Pack of 100)<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Thread rolling screw recommended for use in metal</li><li>Steel is often used in applications where strength is the primary consideration</li><li>Black oxide finish offers mild corrosion resistance and lubricity</li><li>Flat undercut head has a flat top with an 82-degree cone-shaped bearing surface and is undercut for use in shallow countersunk holes</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/41vvfuG8SNL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41oExTGHuyL.jpg" noproxy>