machine screw

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A screw with a thread along the entire length of the shaft.

from The Century Dictionary.

• noun A bolt or screw having a moderately fine machine or standard bolt-thread, a blunt end, and a fillister, flat, or button head to be set home by a screw-driver rather than a, wrench: used for holding together parts of machines or other metal-work.

from the GNU version of the Collaborative International Dictionary of English.

• noun A type of screw used either with a nut or with a tapped hole; it has a slotted head which can be driven by a screwdriver.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A screw designed for metal or a similar material, usually with no point and a relatively fine thread, intended for prepared, threaded holes.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a screw used either with a nut or with a tapped hole; slotted head can be driven by a screwdriver