One or other form of mechanical screw.

(perhaps) a very fine screw.

a piece of metal or other material containing a cylindrical cavity with a raised helical thread running round the interior surface, designed to…

a screw which clamps a movable part when it is required to be fixed.

a screw with a raised helical thread running round the outside (in contrast with a female screw, i.e. a threaded hole).

a metallic screw specially adapted for fastening together parts of woodwork or wood and metal.

= right-and-left screw n. at right and left, adv. adj.n. compounds.

(a) a screw with a loop or eye as its head; (b) Theatre a long screw with a loop or handle, used to secure pieces of scenery on a stage.

a screw with a clawed head.

(a) a threaded shaft; (b) (in a screw propeller system) the shaft or shafts which communicate motion from the piston to the propeller (now rare).

a joint of a pipe with another pipe or with a tap, etc., made using a union (sense 22).

a union joint with a screw thread on one side or both.

a screw with threads at each end running in opposite directions.

a screw used in various instruments for purposes of clamping or adjustment.

a large screw with a square head, which is turned with a spanner.

(a) a coach screw; (b) a coach bolt.

a screw without a head but with a recess at one end to receive a screwdriver or key.

A proprietary name designating a type of screw or bolt turned by an Allen key (see sense 2), typically having a hexagonal socket in the head…

Engineering. A multithreaded screw.

A hardened screw, bolt, etc., designed to cut its own thread in the hole into which it is driven; a self-tapping screw, bolt, etc.