Pan head machine screws are perfect for mounting hardware like knobs and pulls. They are typically used with nuts or pre-drilled holes. They are widely used in a variety of industries such as construction, manufacturing, engineering, etc. The Phillips drive has an x-shaped slot that accepts a Phillips driver and is designed to allow the driver to slip out of the head to help prevent over-tightening and damage to the thread or fastener. The high quality stainless steel provides perfect strength and corrosion resistance in variable temperature and humid environments.