1/4 X 1/2 FLAT HEAD SQUARE/PHILLIPS MACHINE ZINC

Machine Screws are threaded screws with a ¼-inch or smaller nominal diameter. They are designed to be threaded into tapped holes or used in conjunction with nuts. Typical applications include fastening components of machines, tools, appliances, and electronic devices. ASME B18.3 covers the general requirements for the dimensions and performance of Steel Machine Screws.