machine-screw

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.
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World English Dictionary
machine screw
 
n
a fastening screw with a machine-cut thread throughout the length of its shank

Collins English Dictionary - Complete & Unabridged 10th Edition
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