cap screw

American  

noun

1. a fastener for machine parts, threaded along the whole length of its shank and held by threads tapped in the hole in which it is screwed.

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cap screw British  

noun

1. a screwed bolt with a cylindrical head having a hexagonal recess. The bolt is turned using a wrench of hexagonal cross section

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Etymology

Origin of cap screw

First recorded in 1880–85

Example Sentences

Snap a ridged clamp around the neck of the bottle, then a cap screws onto it, preserving the wine’s fizz and sparkle for several days.

From Washington Post

When the heads of cap screws are finished they are designated as “milled heads.”

From Project Gutenberg

Remove one cap screw in the lowest position and insert the handle of the wrench through the screw hole into the hub.

From Project Gutenberg

Then the two are held firmly together with the left hand until the cap screw is turned tight.

From Project Gutenberg

The cap screws were made from steel pump rods.

From Project Gutenberg