2-56X3/16 Phillips Flat Undercut Thread Cutting Screw Type F Fully Threaded Black Oxide (Pack Qty 10,000) BC-0203FPUB

Phillips Flat Undercut Thread Cutting Screw Type F Fully Threaded Black Oxide

Steel thread-cutters are used in heavy gauge sheet metal, aluminum, zinc and lead die castings, cast iron, brass and plastic. Stainless screws offer additional resistance to corrosion, 18-8 moreso than 410. When using any thread-cutting screw, the material in which the threads are cut should have a lower hardness by at least 10 to 20 Rockwell hardness points