The Hillman Group 1977 Brass Hex Machine Screw Nut 4-40 96-Pack<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>These hex nuts are internally threaded and have a hex drive for nearly all general applications</li><li>Can be used with any fastener with a machine screw thread</li><li>Brass is stronger and harder than copper but not as strong or hard as steel</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51S%2B7JNrOgL.jpg" noproxy>