cap screw
noun
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.
Compare
machine bolt,
machine screw.
Origin of cap screw
First recorded in 1880–85
Words nearby cap screw
cap it all,
cap jib,
cap of maintenance,
cap pistol,
cap rock,
cap screw,
cap sleeve,
cap spinning,
cap'n,
cap-a-pie,
cap-and-trade
British Dictionary definitions for cap screw
cap screw
noun
a screwed bolt with a cylindrical head having a hexagonal recess. The bolt is turned using a wrench of hexagonal cross section