a threaded fastener, either used with a nut or driven into a tapped hole, usually having a diameter of about 1 / 4 in. (6.4 mm) or less and a slotted head for tightening by a screwdriver. Cf. cap screw, machine bolt .
MACHINE SCREW
Meaning of MACHINE SCREW in English
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012