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 millimeters) or less and a slotted head for tightening by a screwdriver.
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How to use machine screw in a sentence
It was a small inconvenience, but they were easily replaced with a few machine screws and nuts.
Provide a machine screw, S, for the hole C and drill a small tapered hole in the end of the screw.The Boy Mechanic, Book 2 | Various
When a machine screw is turned around just once, it moves forward a certain distance, as a glance at Fig. 36 will show.Boys' Book of Model Boats | Raymond Francis Yates
A bolt or machine screw was threaded 151 through the nut, so that its inner end pressed against the sighting rod.The Scientific American Boy | A. Russell (Alexander Russell) Bond
It was a real big screw, as they go, a 4-40 flat head machine screw with a length of about three-quarters of an inch.The Trouble with Telstar | John Berryman
British Dictionary definitions for machine screw
a fastening screw with a machine-cut thread throughout the length of its shank
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012