machine screw

American  

noun

1. 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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machine screw British  

noun

1. a fastening screw with a machine-cut thread throughout the length of its shank

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Example Sentences

M is a 5⁄16 machine screw, 1½ in. long, 9 being the nut furnished with it.

From How Two Boys Made Their Own Electrical Apparatus Containing Complete Directions for Making All Kinds of Simple Apparatus for the Study of Elementary Electricity by St. John, Thomas M. (Thomas Matthew)

When a machine screw is turned around just once, it moves forward a certain distance, as a glance at Fig.

From Boys' Book of Model Boats by Yates, Raymond F. (Raymond Francis)

Then we had to cook up an offset screwdriver with a ratchet that would let me reach in about a yard and still run a number 0-80 machine screw up tight.

From The Trouble with Telstar by Schoenherr, John

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.

From The Trouble with Telstar by Schoenherr, John

A bolt or machine screw was threaded 151 through the nut, so that its inner end pressed against the sighting rod.

From The Scientific American Boy Or, The Camp at Willow Clump Island by Bond, A. Russell (Alexander Russell)