machine bolt

American  

noun

1. a threaded fastener, used with a nut for connecting metal parts, having a thread diameter of about 1/4 inch (6.4 millimeters) or more and a square or hexagonal head for tightening by a wrench.

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machine bolt British  

noun

1. a fastening bolt with a machine-cut thread

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Example Sentences

From a traffic flow point of view, the hole in the support on the far side of the box was occupied by a machine bolt with a nut loosely screwed into the end. 

From Forbes • Dec. 2, 2011

Make a simple coil by winding about 50 turns of wire around a machine bolt core.

From Electricity for the 4-H Scientist Idaho Agricultural Extension Service Bulletin 396, June, 1962 by Wilson, Eric B.

The Core is made of a 5⁄16 machine bolt, 2½ in. long.

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)

There are many forms of bolts in the market, but the ordinary "machine bolt," 5⁄16 in. in diameter, is best for our purposes.

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)