Screws from Grainger come in several shapes and sizes, and can fulfill a variety of purposes for your business. Wood screws are designed and threaded with flat heads for wood. A machine screw is available in hex screw, flat head and rounded head options, and is driven with nuts into tapped holes. A socket head cap screw has a tensile strength of up to 180,000 psi, and easily can be accessed with a hex key. Rely on Grainger to supply the hardware you need for your business including screws.