machine screw
noun
a threaded fastener, either used with a nut or driven into a tapped hole, usually having a diameter of about 1/4 inch (6.4 mm) or less and a slotted head for tightening by a screwdriver.
Compare
cap screw,
machine bolt.
Words nearby machine screw
British Dictionary definitions for machine screw
machine screw
noun
a fastening screw with a machine-cut thread throughout the length of its shank