4-40X1/4 Phillips Pan Thread Cutting Screw Type F Fully Threaded Zinc Bake, Pkg of 10000 Factory Price

4-40X1/4 Phillips Pan Thread Cutting Screw Type F Fully Threaded Zinc Bake. Thread-Cutting Type-F threaded screws are used in heavy gauge sheet metal, aluminum, zinc and lead die castings, cast iron, brass and plastic. In stainless steel, material into which the screw is to cut threads should have a lower hardness by 10-20 Rockwell hardness. Pan head screws are a common style that can substituted in most applications for round, truss or binding heads.